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Finding the Fourth Proportional to 219,245.40, 328,868.10 and 61,500.60

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Solution

The fourth proportional to 219,245.40, 328,868.10 and 61,500.60 is: 92,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,245.40 : 328,868.10 = 61,500.60 : x
  2. Step 2: Convert to fraction form
    219,245.40/328,868.10 = 61,500.60/x
  3. Step 3: Cross multiply
    219,245.40x = 328,868.10 × 61,500.60
  4. Step 4: Simplify right side
    219,245.40x = 20,225,585,470.86
  5. Step 5: Solve for x
    x = 20,225,585,470.86/219,245.40
  6. Step 6: Final answer
    x = 92,250.90

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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.