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Finding the Fourth Proportional to 289,248.40, 433,872.60 and 76,015.90

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Solution

The fourth proportional to 289,248.40, 433,872.60 and 76,015.90 is: 114,023.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,248.40 : 433,872.60 = 76,015.90 : x
  2. Step 2: Convert to fraction form
    289,248.40/433,872.60 = 76,015.90/x
  3. Step 3: Cross multiply
    289,248.40x = 433,872.60 × 76,015.90
  4. Step 4: Simplify right side
    289,248.40x = 32,981,216,174.34
  5. Step 5: Solve for x
    x = 32,981,216,174.34/289,248.40
  6. Step 6: Final answer
    x = 114,023.85

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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.