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Finding the Fourth Proportional to 510,772.31, 704,870.54 and 281,337.74

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Solution

The fourth proportional to 510,772.31, 704,870.54 and 281,337.74 is: 388,248.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,772.31 : 704,870.54 = 281,337.74 : x
  2. Step 2: Convert to fraction form
    510,772.31/704,870.54 = 281,337.74/x
  3. Step 3: Cross multiply
    510,772.31x = 704,870.54 × 281,337.74
  4. Step 4: Simplify right side
    510,772.31x = 198,306,679,785.14
  5. Step 5: Solve for x
    x = 198,306,679,785.14/510,772.31
  6. Step 6: Final answer
    x = 388,248.69

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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.