Home / 266,121,045.20-399,181,567.80-129,893,819.60

Finding the Fourth Proportional to 266,121,045.20, 399,181,567.80 and 129,893,819.60

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Solution

The fourth proportional to 266,121,045.20, 399,181,567.80 and 129,893,819.60 is: 194,840,729.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,121,045.20 : 399,181,567.80 = 129,893,819.60 : x
  2. Step 2: Convert to fraction form
    266,121,045.20/399,181,567.80 = 129,893,819.60/x
  3. Step 3: Cross multiply
    266,121,045.20x = 399,181,567.80 × 129,893,819.60
  4. Step 4: Simplify right side
    266,121,045.20x = 51,851,218,555,458,368
  5. Step 5: Solve for x
    x = 51,851,218,555,458,368/266,121,045.20
  6. Step 6: Final answer
    x = 194,840,729.40

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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.