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Finding the Fourth Proportional to 318,871.52, 440,026.07 and 198,010.20

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Solution

The fourth proportional to 318,871.52, 440,026.07 and 198,010.20 is: 273,243.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,871.52 : 440,026.07 = 198,010.20 : x
  2. Step 2: Convert to fraction form
    318,871.52/440,026.07 = 198,010.20/x
  3. Step 3: Cross multiply
    318,871.52x = 440,026.07 × 198,010.20
  4. Step 4: Simplify right side
    318,871.52x = 87,129,650,125.91
  5. Step 5: Solve for x
    x = 87,129,650,125.91/318,871.52
  6. Step 6: Final answer
    x = 273,243.75

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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.