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Finding the Fourth Proportional to 267,707.76, 401,564.08 and 87,790.56

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Solution

The fourth proportional to 267,707.76, 401,564.08 and 87,790.56 is: 131,686.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,707.76 : 401,564.08 = 87,790.56 : x
  2. Step 2: Convert to fraction form
    267,707.76/401,564.08 = 87,790.56/x
  3. Step 3: Cross multiply
    267,707.76x = 401,564.08 × 87,790.56
  4. Step 4: Simplify right side
    267,707.76x = 35,253,535,459.08
  5. Step 5: Solve for x
    x = 35,253,535,459.08/267,707.76
  6. Step 6: Final answer
    x = 131,686.64

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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.