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Finding the Fourth Proportional to 658,534.61, 987,971.91 and 203,115.60

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Solution

The fourth proportional to 658,534.61, 987,971.91 and 203,115.60 is: 304,725.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,534.61 : 987,971.91 = 203,115.60 : x
  2. Step 2: Convert to fraction form
    658,534.61/987,971.91 = 203,115.60/x
  3. Step 3: Cross multiply
    658,534.61x = 987,971.91 × 203,115.60
  4. Step 4: Simplify right side
    658,534.61x = 200,672,507,282.80
  5. Step 5: Solve for x
    x = 200,672,507,282.80/658,534.61
  6. Step 6: Final answer
    x = 304,725.83

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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.