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Finding the Fourth Proportional to 319,242.52, 478,863.78 and 108,882.28

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Solution

The fourth proportional to 319,242.52, 478,863.78 and 108,882.28 is: 163,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,242.52 : 478,863.78 = 108,882.28 : x
  2. Step 2: Convert to fraction form
    319,242.52/478,863.78 = 108,882.28/x
  3. Step 3: Cross multiply
    319,242.52x = 478,863.78 × 108,882.28
  4. Step 4: Simplify right side
    319,242.52x = 52,139,780,175.82
  5. Step 5: Solve for x
    x = 52,139,780,175.82/319,242.52
  6. Step 6: Final answer
    x = 163,323.42

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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.