Home / 280,543,752.70-420,825,251.85-86,453,626.30

Finding the Fourth Proportional to 280,543,752.70, 420,825,251.85 and 86,453,626.30

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Solution

The fourth proportional to 280,543,752.70, 420,825,251.85 and 86,453,626.30 is: 129,683,404.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,543,752.70 : 420,825,251.85 = 86,453,626.30 : x
  2. Step 2: Convert to fraction form
    280,543,752.70/420,825,251.85 = 86,453,626.30/x
  3. Step 3: Cross multiply
    280,543,752.70x = 420,825,251.85 × 86,453,626.30
  4. Step 4: Simplify right side
    280,543,752.70x = 36,381,869,061,043,288
  5. Step 5: Solve for x
    x = 36,381,869,061,043,288/280,543,752.70
  6. Step 6: Final answer
    x = 129,683,404.86

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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.