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Finding the Fourth Proportional to 482,691.78, 666,243.90 and 301,294.50

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Solution

The fourth proportional to 482,691.78, 666,243.90 and 301,294.50 is: 415,867.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,691.78 : 666,243.90 = 301,294.50 : x
  2. Step 2: Convert to fraction form
    482,691.78/666,243.90 = 301,294.50/x
  3. Step 3: Cross multiply
    482,691.78x = 666,243.90 × 301,294.50
  4. Step 4: Simplify right side
    482,691.78x = 200,735,622,728.55
  5. Step 5: Solve for x
    x = 200,735,622,728.55/482,691.78
  6. Step 6: Final answer
    x = 415,867.08

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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.