Home / 279,090.38-385,177.20-156,616.50

Finding the Fourth Proportional to 279,090.38, 385,177.20 and 156,616.50

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Solution

The fourth proportional to 279,090.38, 385,177.20 and 156,616.50 is: 216,148.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,090.38 : 385,177.20 = 156,616.50 : x
  2. Step 2: Convert to fraction form
    279,090.38/385,177.20 = 156,616.50/x
  3. Step 3: Cross multiply
    279,090.38x = 385,177.20 × 156,616.50
  4. Step 4: Simplify right side
    279,090.38x = 60,325,104,943.80
  5. Step 5: Solve for x
    x = 60,325,104,943.80/279,090.38
  6. Step 6: Final answer
    x = 216,148.99

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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.