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Finding the Fourth Proportional to 288,352.62, 397,910.16 and 172,197.18

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Solution

The fourth proportional to 288,352.62, 397,910.16 and 172,197.18 is: 237,622.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,352.62 : 397,910.16 = 172,197.18 : x
  2. Step 2: Convert to fraction form
    288,352.62/397,910.16 = 172,197.18/x
  3. Step 3: Cross multiply
    288,352.62x = 397,910.16 × 172,197.18
  4. Step 4: Simplify right side
    288,352.62x = 68,519,007,445.35
  5. Step 5: Solve for x
    x = 68,519,007,445.35/288,352.62
  6. Step 6: Final answer
    x = 237,622.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.