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Finding the Fourth Proportional to 308,148.49, 425,247.05 and 172,188.17

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Solution

The fourth proportional to 308,148.49, 425,247.05 and 172,188.17 is: 237,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,148.49 : 425,247.05 = 172,188.17 : x
  2. Step 2: Convert to fraction form
    308,148.49/425,247.05 = 172,188.17/x
  3. Step 3: Cross multiply
    308,148.49x = 425,247.05 × 172,188.17
  4. Step 4: Simplify right side
    308,148.49x = 73,222,511,337.40
  5. Step 5: Solve for x
    x = 73,222,511,337.40/308,148.49
  6. Step 6: Final answer
    x = 237,620.87

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1.5x scale

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.