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Finding the Fourth Proportional to 221,938.56, 332,838.72 and 74,160

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Solution

The fourth proportional to 221,938.56, 332,838.72 and 74,160 is: 111,216.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,938.56 : 332,838.72 = 74,160 : x
  2. Step 2: Convert to fraction form
    221,938.56/332,838.72 = 74,160/x
  3. Step 3: Cross multiply
    221,938.56x = 332,838.72 × 74,160
  4. Step 4: Simplify right side
    221,938.56x = 24,683,319,475.20
  5. Step 5: Solve for x
    x = 24,683,319,475.20/221,938.56
  6. Step 6: Final answer
    x = 111,216.90

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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.