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Finding the Fourth Proportional to 319,372.39, 479,058.65 and 129,935.84

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Solution

The fourth proportional to 319,372.39, 479,058.65 and 129,935.84 is: 194,903.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,372.39 : 479,058.65 = 129,935.84 : x
  2. Step 2: Convert to fraction form
    319,372.39/479,058.65 = 129,935.84/x
  3. Step 3: Cross multiply
    319,372.39x = 479,058.65 × 129,935.84
  4. Step 4: Simplify right side
    319,372.39x = 62,246,887,447.34
  5. Step 5: Solve for x
    x = 62,246,887,447.34/319,372.39
  6. Step 6: Final answer
    x = 194,903.79

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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.