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Finding the Fourth Proportional to 647,959.20, 971,247.60 and 248,445.60

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Solution

The fourth proportional to 647,959.20, 971,247.60 and 248,445.60 is: 372,403.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,959.20 : 971,247.60 = 248,445.60 : x
  2. Step 2: Convert to fraction form
    647,959.20/971,247.60 = 248,445.60/x
  3. Step 3: Cross multiply
    647,959.20x = 971,247.60 × 248,445.60
  4. Step 4: Simplify right side
    647,959.20x = 241,302,192,730.56
  5. Step 5: Solve for x
    x = 241,302,192,730.56/647,959.20
  6. Step 6: Final answer
    x = 372,403.37

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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.