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Finding the Fourth Proportional to 259,861.78, 389,792.64 and 62,869.78

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Solution

The fourth proportional to 259,861.78, 389,792.64 and 62,869.78 is: 94,304.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,861.78 : 389,792.64 = 62,869.78 : x
  2. Step 2: Convert to fraction form
    259,861.78/389,792.64 = 62,869.78/x
  3. Step 3: Cross multiply
    259,861.78x = 389,792.64 × 62,869.78
  4. Step 4: Simplify right side
    259,861.78x = 24,506,177,522.42
  5. Step 5: Solve for x
    x = 24,506,177,522.42/259,861.78
  6. Step 6: Final answer
    x = 94,304.66

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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.