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Finding the Fourth Proportional to 397,512.20, 596,297.10 and 239,400.20

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Solution

The fourth proportional to 397,512.20, 596,297.10 and 239,400.20 is: 359,117.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,512.20 : 596,297.10 = 239,400.20 : x
  2. Step 2: Convert to fraction form
    397,512.20/596,297.10 = 239,400.20/x
  3. Step 3: Cross multiply
    397,512.20x = 596,297.10 × 239,400.20
  4. Step 4: Simplify right side
    397,512.20x = 142,753,644,999.42
  5. Step 5: Solve for x
    x = 142,753,644,999.42/397,512.20
  6. Step 6: Final answer
    x = 359,117.64

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1.5x scale

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.