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Finding the Fourth Proportional to 498,117.72, 747,121.22 and 178,256.67

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Solution

The fourth proportional to 498,117.72, 747,121.22 and 178,256.67 is: 267,365.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,117.72 : 747,121.22 = 178,256.67 : x
  2. Step 2: Convert to fraction form
    498,117.72/747,121.22 = 178,256.67/x
  3. Step 3: Cross multiply
    498,117.72x = 747,121.22 × 178,256.67
  4. Step 4: Simplify right side
    498,117.72x = 133,179,340,763.54
  5. Step 5: Solve for x
    x = 133,179,340,763.54/498,117.72
  6. Step 6: Final answer
    x = 267,365.19

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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.