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Finding the Fourth Proportional to 325,135.71, 487,750.14 and 100,515.69

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Solution

The fourth proportional to 325,135.71, 487,750.14 and 100,515.69 is: 150,787.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,135.71 : 487,750.14 = 100,515.69 : x
  2. Step 2: Convert to fraction form
    325,135.71/487,750.14 = 100,515.69/x
  3. Step 3: Cross multiply
    325,135.71x = 487,750.14 × 100,515.69
  4. Step 4: Simplify right side
    325,135.71x = 49,026,541,869.70
  5. Step 5: Solve for x
    x = 49,026,541,869.70/325,135.71
  6. Step 6: Final answer
    x = 150,787.93

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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.