Home / 266,115,275.20-399,172,912.80-129,888,049.60

Finding the Fourth Proportional to 266,115,275.20, 399,172,912.80 and 129,888,049.60

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Solution

The fourth proportional to 266,115,275.20, 399,172,912.80 and 129,888,049.60 is: 194,832,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,115,275.20 : 399,172,912.80 = 129,888,049.60 : x
  2. Step 2: Convert to fraction form
    266,115,275.20/399,172,912.80 = 129,888,049.60/x
  3. Step 3: Cross multiply
    266,115,275.20x = 399,172,912.80 × 129,888,049.60
  4. Step 4: Simplify right side
    266,115,275.20x = 51,847,791,096,742,872
  5. Step 5: Solve for x
    x = 51,847,791,096,742,872/266,115,275.20
  6. Step 6: Final answer
    x = 194,832,074.40

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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.