Home / 260,736,868.20-391,105,302.30-78,984,046.20

Finding the Fourth Proportional to 260,736,868.20, 391,105,302.30 and 78,984,046.20

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Solution

The fourth proportional to 260,736,868.20, 391,105,302.30 and 78,984,046.20 is: 118,476,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,736,868.20 : 391,105,302.30 = 78,984,046.20 : x
  2. Step 2: Convert to fraction form
    260,736,868.20/391,105,302.30 = 78,984,046.20/x
  3. Step 3: Cross multiply
    260,736,868.20x = 391,105,302.30 × 78,984,046.20
  4. Step 4: Simplify right side
    260,736,868.20x = 30,891,079,265,928,168
  5. Step 5: Solve for x
    x = 30,891,079,265,928,168/260,736,868.20
  6. Step 6: Final answer
    x = 118,476,069.30

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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.