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Finding the Fourth Proportional to 545,161.69, 752,323.03 and 303,439.06

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Solution

The fourth proportional to 545,161.69, 752,323.03 and 303,439.06 is: 418,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,161.69 : 752,323.03 = 303,439.06 : x
  2. Step 2: Convert to fraction form
    545,161.69/752,323.03 = 303,439.06/x
  3. Step 3: Cross multiply
    545,161.69x = 752,323.03 × 303,439.06
  4. Step 4: Simplify right side
    545,161.69x = 228,284,193,039.55
  5. Step 5: Solve for x
    x = 228,284,193,039.55/545,161.69
  6. Step 6: Final answer
    x = 418,745.85

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.