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Finding the Fourth Proportional to 308,549.79, 425,838.15 and 172,591.29

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Solution

The fourth proportional to 308,549.79, 425,838.15 and 172,591.29 is: 238,198.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,549.79 : 425,838.15 = 172,591.29 : x
  2. Step 2: Convert to fraction form
    308,549.79/425,838.15 = 172,591.29/x
  3. Step 3: Cross multiply
    308,549.79x = 425,838.15 × 172,591.29
  4. Step 4: Simplify right side
    308,549.79x = 73,495,955,639.71
  5. Step 5: Solve for x
    x = 73,495,955,639.71/308,549.79
  6. Step 6: Final answer
    x = 238,198.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.