Home / 260,783,590.20-391,175,385.30-256,752,511.80

Finding the Fourth Proportional to 260,783,590.20, 391,175,385.30 and 256,752,511.80

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Solution

The fourth proportional to 260,783,590.20, 391,175,385.30 and 256,752,511.80 is: 385,128,767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,783,590.20 : 391,175,385.30 = 256,752,511.80 : x
  2. Step 2: Convert to fraction form
    260,783,590.20/391,175,385.30 = 256,752,511.80/x
  3. Step 3: Cross multiply
    260,783,590.20x = 391,175,385.30 × 256,752,511.80
  4. Step 4: Simplify right side
    260,783,590.20x = 100,435,262,730,107,808
  5. Step 5: Solve for x
    x = 100,435,262,730,107,808/260,783,590.20
  6. Step 6: Final answer
    x = 385,128,767.70

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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.