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Finding the Fourth Proportional to 267,638.48, 401,330.60 and 155,353.11

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Solution

The fourth proportional to 267,638.48, 401,330.60 and 155,353.11 is: 232,955.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,638.48 : 401,330.60 = 155,353.11 : x
  2. Step 2: Convert to fraction form
    267,638.48/401,330.60 = 155,353.11/x
  3. Step 3: Cross multiply
    267,638.48x = 401,330.60 × 155,353.11
  4. Step 4: Simplify right side
    267,638.48x = 62,347,958,535.21
  5. Step 5: Solve for x
    x = 62,347,958,535.21/267,638.48
  6. Step 6: Final answer
    x = 232,955.88

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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.