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Finding the Fourth Proportional to 484,176.36, 726,264.60 and 129,191.70

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Solution

The fourth proportional to 484,176.36, 726,264.60 and 129,191.70 is: 193,787.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,176.36 : 726,264.60 = 129,191.70 : x
  2. Step 2: Convert to fraction form
    484,176.36/726,264.60 = 129,191.70/x
  3. Step 3: Cross multiply
    484,176.36x = 726,264.60 × 129,191.70
  4. Step 4: Simplify right side
    484,176.36x = 93,827,358,323.82
  5. Step 5: Solve for x
    x = 93,827,358,323.82/484,176.36
  6. Step 6: Final answer
    x = 193,787.57

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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.