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Finding the Fourth Proportional to 231,572.80, 346,840.80 and 178,811.20

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Solution

The fourth proportional to 231,572.80, 346,840.80 and 178,811.20 is: 267,816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,572.80 : 346,840.80 = 178,811.20 : x
  2. Step 2: Convert to fraction form
    231,572.80/346,840.80 = 178,811.20/x
  3. Step 3: Cross multiply
    231,572.80x = 346,840.80 × 178,811.20
  4. Step 4: Simplify right side
    231,572.80x = 62,019,019,656.96
  5. Step 5: Solve for x
    x = 62,019,019,656.96/231,572.80
  6. Step 6: Final answer
    x = 267,816.51

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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.