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Finding the Fourth Proportional to 288,247.60, 431,350.80 and 251,214.40

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Solution

The fourth proportional to 288,247.60, 431,350.80 and 251,214.40 is: 375,932.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,247.60 : 431,350.80 = 251,214.40 : x
  2. Step 2: Convert to fraction form
    288,247.60/431,350.80 = 251,214.40/x
  3. Step 3: Cross multiply
    288,247.60x = 431,350.80 × 251,214.40
  4. Step 4: Simplify right side
    288,247.60x = 108,361,532,411.52
  5. Step 5: Solve for x
    x = 108,361,532,411.52/288,247.60
  6. Step 6: Final answer
    x = 375,932.12

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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.