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Finding the Fourth Proportional to 288,002.52, 431,987.61 and 88,322.37

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Solution

The fourth proportional to 288,002.52, 431,987.61 and 88,322.37 is: 132,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,002.52 : 431,987.61 = 88,322.37 : x
  2. Step 2: Convert to fraction form
    288,002.52/431,987.61 = 88,322.37/x
  3. Step 3: Cross multiply
    288,002.52x = 431,987.61 × 88,322.37
  4. Step 4: Simplify right side
    288,002.52x = 38,154,169,525.84
  5. Step 5: Solve for x
    x = 38,154,169,525.84/288,002.52
  6. Step 6: Final answer
    x = 132,478.60

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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.