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Finding the Fourth Proportional to 647,245.20, 970,176.60 and 247,731.60

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Solution

The fourth proportional to 647,245.20, 970,176.60 and 247,731.60 is: 371,332.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,245.20 : 970,176.60 = 247,731.60 : x
  2. Step 2: Convert to fraction form
    647,245.20/970,176.60 = 247,731.60/x
  3. Step 3: Cross multiply
    647,245.20x = 970,176.60 × 247,731.60
  4. Step 4: Simplify right side
    647,245.20x = 240,343,401,400.56
  5. Step 5: Solve for x
    x = 240,343,401,400.56/647,245.20
  6. Step 6: Final answer
    x = 371,332.84

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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.