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Finding the Fourth Proportional to 254,569.80, 381,806.10 and 77,082.60

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Solution

The fourth proportional to 254,569.80, 381,806.10 and 77,082.60 is: 115,609.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,569.80 : 381,806.10 = 77,082.60 : x
  2. Step 2: Convert to fraction form
    254,569.80/381,806.10 = 77,082.60/x
  3. Step 3: Cross multiply
    254,569.80x = 381,806.10 × 77,082.60
  4. Step 4: Simplify right side
    254,569.80x = 29,430,606,883.86
  5. Step 5: Solve for x
    x = 29,430,606,883.86/254,569.80
  6. Step 6: Final answer
    x = 115,609.18

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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.