Home / 280,453,176.29-420,659,835.40-86,344,351.04

Finding the Fourth Proportional to 280,453,176.29, 420,659,835.40 and 86,344,351.04

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Solution

The fourth proportional to 280,453,176.29, 420,659,835.40 and 86,344,351.04 is: 129,510,390.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,453,176.29 : 420,659,835.40 = 86,344,351.04 : x
  2. Step 2: Convert to fraction form
    280,453,176.29/420,659,835.40 = 86,344,351.04/x
  3. Step 3: Cross multiply
    280,453,176.29x = 420,659,835.40 × 86,344,351.04
  4. Step 4: Simplify right side
    280,453,176.29x = 36,321,600,497,365,800
  5. Step 5: Solve for x
    x = 36,321,600,497,365,800/280,453,176.29
  6. Step 6: Final answer
    x = 129,510,390.92

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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.