Home / 266,117,006.20-399,175,509.30-129,889,780.60

Finding the Fourth Proportional to 266,117,006.20, 399,175,509.30 and 129,889,780.60

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Solution

The fourth proportional to 266,117,006.20, 399,175,509.30 and 129,889,780.60 is: 194,834,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,117,006.20 : 399,175,509.30 = 129,889,780.60 : x
  2. Step 2: Convert to fraction form
    266,117,006.20/399,175,509.30 = 129,889,780.60/x
  3. Step 3: Cross multiply
    266,117,006.20x = 399,175,509.30 × 129,889,780.60
  4. Step 4: Simplify right side
    266,117,006.20x = 51,848,819,323,870,256
  5. Step 5: Solve for x
    x = 51,848,819,323,870,256/266,117,006.20
  6. Step 6: Final answer
    x = 194,834,670.90

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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.