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Finding the Fourth Proportional to 451,105.71, 676,809.63 and 147,513.87

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Solution

The fourth proportional to 451,105.71, 676,809.63 and 147,513.87 is: 221,320.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,105.71 : 676,809.63 = 147,513.87 : x
  2. Step 2: Convert to fraction form
    451,105.71/676,809.63 = 147,513.87/x
  3. Step 3: Cross multiply
    451,105.71x = 676,809.63 × 147,513.87
  4. Step 4: Simplify right side
    451,105.71x = 99,838,807,774.57
  5. Step 5: Solve for x
    x = 99,838,807,774.57/451,105.71
  6. Step 6: Final answer
    x = 221,320.20

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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.