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Finding the Fourth Proportional to 268,484.79, 402,719.95 and 66,082.70

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Solution

The fourth proportional to 268,484.79, 402,719.95 and 66,082.70 is: 99,122.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,484.79 : 402,719.95 = 66,082.70 : x
  2. Step 2: Convert to fraction form
    268,484.79/402,719.95 = 66,082.70/x
  3. Step 3: Cross multiply
    268,484.79x = 402,719.95 × 66,082.70
  4. Step 4: Simplify right side
    268,484.79x = 26,612,822,729.27
  5. Step 5: Solve for x
    x = 26,612,822,729.27/268,484.79
  6. Step 6: Final answer
    x = 99,122.27

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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.