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Finding the Fourth Proportional to 545,205.15, 752,375.05 and 303,487.38

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Solution

The fourth proportional to 545,205.15, 752,375.05 and 303,487.38 is: 418,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,205.15 : 752,375.05 = 303,487.38 : x
  2. Step 2: Convert to fraction form
    545,205.15/752,375.05 = 303,487.38/x
  3. Step 3: Cross multiply
    545,205.15x = 752,375.05 × 303,487.38
  4. Step 4: Simplify right side
    545,205.15x = 228,336,331,943.15
  5. Step 5: Solve for x
    x = 228,336,331,943.15/545,205.15
  6. Step 6: Final answer
    x = 418,808.10

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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.