Home / 260,769,011.70-391,153,517.55-78,992,570.10

Finding the Fourth Proportional to 260,769,011.70, 391,153,517.55 and 78,992,570.10

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Solution

The fourth proportional to 260,769,011.70, 391,153,517.55 and 78,992,570.10 is: 118,488,855.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,769,011.70 : 391,153,517.55 = 78,992,570.10 : x
  2. Step 2: Convert to fraction form
    260,769,011.70/391,153,517.55 = 78,992,570.10/x
  3. Step 3: Cross multiply
    260,769,011.70x = 391,153,517.55 × 78,992,570.10
  4. Step 4: Simplify right side
    260,769,011.70x = 30,898,221,654,929,952
  5. Step 5: Solve for x
    x = 30,898,221,654,929,952/260,769,011.70
  6. Step 6: Final answer
    x = 118,488,855.15

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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.