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Finding the Fourth Proportional to 308,339.93, 425,512.27 and 172,381.43

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Solution

The fourth proportional to 308,339.93, 425,512.27 and 172,381.43 is: 237,888.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,339.93 : 425,512.27 = 172,381.43 : x
  2. Step 2: Convert to fraction form
    308,339.93/425,512.27 = 172,381.43/x
  3. Step 3: Cross multiply
    308,339.93x = 425,512.27 × 172,381.43
  4. Step 4: Simplify right side
    308,339.93x = 73,350,414,864.40
  5. Step 5: Solve for x
    x = 73,350,414,864.40/308,339.93
  6. Step 6: Final answer
    x = 237,888.15

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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.