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Finding the Fourth Proportional to 279,091.86, 385,156.90 and 159,882.90

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Solution

The fourth proportional to 279,091.86, 385,156.90 and 159,882.90 is: 220,644.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,091.86 : 385,156.90 = 159,882.90 : x
  2. Step 2: Convert to fraction form
    279,091.86/385,156.90 = 159,882.90/x
  3. Step 3: Cross multiply
    279,091.86x = 385,156.90 × 159,882.90
  4. Step 4: Simplify right side
    279,091.86x = 61,580,002,127.01
  5. Step 5: Solve for x
    x = 61,580,002,127.01/279,091.86
  6. Step 6: Final answer
    x = 220,644.21

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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.