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Finding the Fourth Proportional to 221,348.55, 331,985.67 and 61,440.74

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Solution

The fourth proportional to 221,348.55, 331,985.67 and 61,440.74 is: 92,150.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,348.55 : 331,985.67 = 61,440.74 : x
  2. Step 2: Convert to fraction form
    221,348.55/331,985.67 = 61,440.74/x
  3. Step 3: Cross multiply
    221,348.55x = 331,985.67 × 61,440.74
  4. Step 4: Simplify right side
    221,348.55x = 20,397,443,574.27
  5. Step 5: Solve for x
    x = 20,397,443,574.27/221,348.55
  6. Step 6: Final answer
    x = 92,150.79

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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.