Home / 279,142.22-385,129.38-158,274.02

Finding the Fourth Proportional to 279,142.22, 385,129.38 and 158,274.02

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Solution

The fourth proportional to 279,142.22, 385,129.38 and 158,274.02 is: 218,368.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,142.22 : 385,129.38 = 158,274.02 : x
  2. Step 2: Convert to fraction form
    279,142.22/385,129.38 = 158,274.02/x
  3. Step 3: Cross multiply
    279,142.22x = 385,129.38 × 158,274.02
  4. Step 4: Simplify right side
    279,142.22x = 60,955,975,192.71
  5. Step 5: Solve for x
    x = 60,955,975,192.71/279,142.22
  6. Step 6: Final answer
    x = 218,368.88

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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.