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Finding the Fourth Proportional to 288,067.60, 432,166.20 and 88,397.20

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Solution

The fourth proportional to 288,067.60, 432,166.20 and 88,397.20 is: 132,615.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,067.60 : 432,166.20 = 88,397.20 : x
  2. Step 2: Convert to fraction form
    288,067.60/432,166.20 = 88,397.20/x
  3. Step 3: Cross multiply
    288,067.60x = 432,166.20 × 88,397.20
  4. Step 4: Simplify right side
    288,067.60x = 38,202,282,014.64
  5. Step 5: Solve for x
    x = 38,202,282,014.64/288,067.60
  6. Step 6: Final answer
    x = 132,615.68

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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.