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Finding the Fourth Proportional to 288,003.30, 431,988.77 and 88,323.13

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Solution

The fourth proportional to 288,003.30, 431,988.77 and 88,323.13 is: 132,479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,003.30 : 431,988.77 = 88,323.13 : x
  2. Step 2: Convert to fraction form
    288,003.30/431,988.77 = 88,323.13/x
  3. Step 3: Cross multiply
    288,003.30x = 431,988.77 × 88,323.13
  4. Step 4: Simplify right side
    288,003.30x = 38,154,602,018.60
  5. Step 5: Solve for x
    x = 38,154,602,018.60/288,003.30
  6. Step 6: Final answer
    x = 132,479.74

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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.