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Finding the Fourth Proportional to 287,930.04, 431,978.06 and 88,279.89

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Solution

The fourth proportional to 287,930.04, 431,978.06 and 88,279.89 is: 132,445.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,930.04 : 431,978.06 = 88,279.89 : x
  2. Step 2: Convert to fraction form
    287,930.04/431,978.06 = 88,279.89/x
  3. Step 3: Cross multiply
    287,930.04x = 431,978.06 × 88,279.89
  4. Step 4: Simplify right side
    287,930.04x = 38,134,973,017.92
  5. Step 5: Solve for x
    x = 38,134,973,017.92/287,930.04
  6. Step 6: Final answer
    x = 132,445.28

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.