Home / 385,902,092.85-532,548,251.64-209,690,087.61

Finding the Fourth Proportional to 385,902,092.85, 532,548,251.64 and 209,690,087.61

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Solution

The fourth proportional to 385,902,092.85, 532,548,251.64 and 209,690,087.61 is: 289,374,148.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,902,092.85 : 532,548,251.64 = 209,690,087.61 : x
  2. Step 2: Convert to fraction form
    385,902,092.85/532,548,251.64 = 209,690,087.61/x
  3. Step 3: Cross multiply
    385,902,092.85x = 532,548,251.64 × 209,690,087.61
  4. Step 4: Simplify right side
    385,902,092.85x = 111,670,089,542,943,936
  5. Step 5: Solve for x
    x = 111,670,089,542,943,936/385,902,092.85
  6. Step 6: Final answer
    x = 289,374,148.55

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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.