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Finding the Fourth Proportional to 402,500.67, 554,865.63 and 281,265.69

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Solution

The fourth proportional to 402,500.67, 554,865.63 and 281,265.69 is: 387,737.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,500.67 : 554,865.63 = 281,265.69 : x
  2. Step 2: Convert to fraction form
    402,500.67/554,865.63 = 281,265.69/x
  3. Step 3: Cross multiply
    402,500.67x = 554,865.63 × 281,265.69
  4. Step 4: Simplify right side
    402,500.67x = 156,064,664,279.24
  5. Step 5: Solve for x
    x = 156,064,664,279.24/402,500.67
  6. Step 6: Final answer
    x = 387,737.65

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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.