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Finding the Fourth Proportional to 267,139.64, 400,912.58 and 98,819.16

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Solution

The fourth proportional to 267,139.64, 400,912.58 and 98,819.16 is: 148,303.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,139.64 : 400,912.58 = 98,819.16 : x
  2. Step 2: Convert to fraction form
    267,139.64/400,912.58 = 98,819.16/x
  3. Step 3: Cross multiply
    267,139.64x = 400,912.58 × 98,819.16
  4. Step 4: Simplify right side
    267,139.64x = 39,617,844,389.03
  5. Step 5: Solve for x
    x = 39,617,844,389.03/267,139.64
  6. Step 6: Final answer
    x = 148,303.88

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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.