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Finding the Fourth Proportional to 308,148.17, 425,264.19 and 172,182.47

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Solution

The fourth proportional to 308,148.17, 425,264.19 and 172,182.47 is: 237,622.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,148.17 : 425,264.19 = 172,182.47 : x
  2. Step 2: Convert to fraction form
    308,148.17/425,264.19 = 172,182.47/x
  3. Step 3: Cross multiply
    308,148.17x = 425,264.19 × 172,182.47
  4. Step 4: Simplify right side
    308,148.17x = 73,223,038,636.75
  5. Step 5: Solve for x
    x = 73,223,038,636.75/308,148.17
  6. Step 6: Final answer
    x = 237,622.82

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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.