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Finding the Fourth Proportional to 288,765.48, 432,475.38 and 280,793.64

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Solution

The fourth proportional to 288,765.48, 432,475.38 and 280,793.64 is: 420,536.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,765.48 : 432,475.38 = 280,793.64 : x
  2. Step 2: Convert to fraction form
    288,765.48/432,475.38 = 280,793.64/x
  3. Step 3: Cross multiply
    288,765.48x = 432,475.38 × 280,793.64
  4. Step 4: Simplify right side
    288,765.48x = 121,436,336,160.58
  5. Step 5: Solve for x
    x = 121,436,336,160.58/288,765.48
  6. Step 6: Final answer
    x = 420,536.19

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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.