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Finding the Fourth Proportional to 288,249.60, 431,353.80 and 251,216.40

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Solution

The fourth proportional to 288,249.60, 431,353.80 and 251,216.40 is: 375,935.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,249.60 : 431,353.80 = 251,216.40 : x
  2. Step 2: Convert to fraction form
    288,249.60/431,353.80 = 251,216.40/x
  3. Step 3: Cross multiply
    288,249.60x = 431,353.80 × 251,216.40
  4. Step 4: Simplify right side
    288,249.60x = 108,363,148,762.32
  5. Step 5: Solve for x
    x = 108,363,148,762.32/288,249.60
  6. Step 6: Final answer
    x = 375,935.12

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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.