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Finding the Fourth Proportional to 261,806.20, 392,709.30 and 242,560.60

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Solution

The fourth proportional to 261,806.20, 392,709.30 and 242,560.60 is: 363,840.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,806.20 : 392,709.30 = 242,560.60 : x
  2. Step 2: Convert to fraction form
    261,806.20/392,709.30 = 242,560.60/x
  3. Step 3: Cross multiply
    261,806.20x = 392,709.30 × 242,560.60
  4. Step 4: Simplify right side
    261,806.20x = 95,255,803,433.58
  5. Step 5: Solve for x
    x = 95,255,803,433.58/261,806.20
  6. Step 6: Final answer
    x = 363,840.90

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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.