Home / 280,219,974.30-420,399,339.57-83,482,508.70

Finding the Fourth Proportional to 280,219,974.30, 420,399,339.57 and 83,482,508.70

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Solution

The fourth proportional to 280,219,974.30, 420,399,339.57 and 83,482,508.70 is: 125,244,432.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,219,974.30 : 420,399,339.57 = 83,482,508.70 : x
  2. Step 2: Convert to fraction form
    280,219,974.30/420,399,339.57 = 83,482,508.70/x
  3. Step 3: Cross multiply
    280,219,974.30x = 420,399,339.57 × 83,482,508.70
  4. Step 4: Simplify right side
    280,219,974.30x = 35,095,991,523,126,780
  5. Step 5: Solve for x
    x = 35,095,991,523,126,780/280,219,974.30
  6. Step 6: Final answer
    x = 125,244,432.02

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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.