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Finding the Fourth Proportional to 257,787.80, 386,700.14 and 107,877.14

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Solution

The fourth proportional to 257,787.80, 386,700.14 and 107,877.14 is: 161,823.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,787.80 : 386,700.14 = 107,877.14 : x
  2. Step 2: Convert to fraction form
    257,787.80/386,700.14 = 107,877.14/x
  3. Step 3: Cross multiply
    257,787.80x = 386,700.14 × 107,877.14
  4. Step 4: Simplify right side
    257,787.80x = 41,716,105,140.80
  5. Step 5: Solve for x
    x = 41,716,105,140.80/257,787.80
  6. Step 6: Final answer
    x = 161,823.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.