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Finding the Fourth Proportional to 545,161.34, 752,322.69 and 303,438.71

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Solution

The fourth proportional to 545,161.34, 752,322.69 and 303,438.71 is: 418,745.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,161.34 : 752,322.69 = 303,438.71 : x
  2. Step 2: Convert to fraction form
    545,161.34/752,322.69 = 303,438.71/x
  3. Step 3: Cross multiply
    545,161.34x = 752,322.69 × 303,438.71
  4. Step 4: Simplify right side
    545,161.34x = 228,283,826,557.33
  5. Step 5: Solve for x
    x = 228,283,826,557.33/545,161.34
  6. Step 6: Final answer
    x = 418,745.44

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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.