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Finding the Fourth Proportional to 319,272.88, 479,023.80 and 136,827.12

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Solution

The fourth proportional to 319,272.88, 479,023.80 and 136,827.12 is: 205,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,272.88 : 479,023.80 = 136,827.12 : x
  2. Step 2: Convert to fraction form
    319,272.88/479,023.80 = 136,827.12/x
  3. Step 3: Cross multiply
    319,272.88x = 479,023.80 × 136,827.12
  4. Step 4: Simplify right side
    319,272.88x = 65,543,446,965.46
  5. Step 5: Solve for x
    x = 65,543,446,965.46/319,272.88
  6. Step 6: Final answer
    x = 205,289.74

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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.