Home / 385,902,462.42-532,548,761.94-209,690,456.76

Finding the Fourth Proportional to 385,902,462.42, 532,548,761.94 and 209,690,456.76

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Solution

The fourth proportional to 385,902,462.42, 532,548,761.94 and 209,690,456.76 is: 289,374,658.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,902,462.42 : 532,548,761.94 = 209,690,456.76 : x
  2. Step 2: Convert to fraction form
    385,902,462.42/532,548,761.94 = 209,690,456.76/x
  3. Step 3: Cross multiply
    385,902,462.42x = 532,548,761.94 × 209,690,456.76
  4. Step 4: Simplify right side
    385,902,462.42x = 111,670,393,138,171,104
  5. Step 5: Solve for x
    x = 111,670,393,138,171,104/385,902,462.42
  6. Step 6: Final answer
    x = 289,374,658.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.