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Finding the Fourth Proportional to 291,625.71, 437,397.03 and 91,920.14

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Solution

The fourth proportional to 291,625.71, 437,397.03 and 91,920.14 is: 137,867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,625.71 : 437,397.03 = 91,920.14 : x
  2. Step 2: Convert to fraction form
    291,625.71/437,397.03 = 91,920.14/x
  3. Step 3: Cross multiply
    291,625.71x = 437,397.03 × 91,920.14
  4. Step 4: Simplify right side
    291,625.71x = 40,205,594,046.20
  5. Step 5: Solve for x
    x = 40,205,594,046.20/291,625.71
  6. Step 6: Final answer
    x = 137,867.11

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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.