Home / 260,557,624.80-390,985,736.40-99,115,423.20

Finding the Fourth Proportional to 260,557,624.80, 390,985,736.40 and 99,115,423.20

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Solution

The fourth proportional to 260,557,624.80, 390,985,736.40 and 99,115,423.20 is: 148,729,927.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,557,624.80 : 390,985,736.40 = 99,115,423.20 : x
  2. Step 2: Convert to fraction form
    260,557,624.80/390,985,736.40 = 99,115,423.20/x
  3. Step 3: Cross multiply
    260,557,624.80x = 390,985,736.40 × 99,115,423.20
  4. Step 4: Simplify right side
    260,557,624.80x = 38,752,716,728,449,640
  5. Step 5: Solve for x
    x = 38,752,716,728,449,640/260,557,624.80
  6. Step 6: Final answer
    x = 148,729,927.82

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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.