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Finding the Fourth Proportional to 288,057.60, 432,151.20 and 88,387.20

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Solution

The fourth proportional to 288,057.60, 432,151.20 and 88,387.20 is: 132,600.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,057.60 : 432,151.20 = 88,387.20 : x
  2. Step 2: Convert to fraction form
    288,057.60/432,151.20 = 88,387.20/x
  3. Step 3: Cross multiply
    288,057.60x = 432,151.20 × 88,387.20
  4. Step 4: Simplify right side
    288,057.60x = 38,196,634,544.64
  5. Step 5: Solve for x
    x = 38,196,634,544.64/288,057.60
  6. Step 6: Final answer
    x = 132,600.68

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1.5x scale

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.