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Finding the Fourth Proportional to 231,357.60, 347,317.20 and 147,117.60

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Solution

The fourth proportional to 231,357.60, 347,317.20 and 147,117.60 is: 220,854.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,357.60 : 347,317.20 = 147,117.60 : x
  2. Step 2: Convert to fraction form
    231,357.60/347,317.20 = 147,117.60/x
  3. Step 3: Cross multiply
    231,357.60x = 347,317.20 × 147,117.60
  4. Step 4: Simplify right side
    231,357.60x = 51,096,472,902.72
  5. Step 5: Solve for x
    x = 51,096,472,902.72/231,357.60
  6. Step 6: Final answer
    x = 220,854.96

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1.5x scale

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.