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Finding the Fourth Proportional to 267,626.40, 401,440.29 and 90,258

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Solution

The fourth proportional to 267,626.40, 401,440.29 and 90,258 is: 135,387.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,626.40 : 401,440.29 = 90,258 : x
  2. Step 2: Convert to fraction form
    267,626.40/401,440.29 = 90,258/x
  3. Step 3: Cross multiply
    267,626.40x = 401,440.29 × 90,258
  4. Step 4: Simplify right side
    267,626.40x = 36,233,197,694.82
  5. Step 5: Solve for x
    x = 36,233,197,694.82/267,626.40
  6. Step 6: Final answer
    x = 135,387.23

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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.