Home / 279,195.18-385,287.60-151,871.28

Finding the Fourth Proportional to 279,195.18, 385,287.60 and 151,871.28

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Solution

The fourth proportional to 279,195.18, 385,287.60 and 151,871.28 is: 209,581.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,195.18 : 385,287.60 = 151,871.28 : x
  2. Step 2: Convert to fraction form
    279,195.18/385,287.60 = 151,871.28/x
  3. Step 3: Cross multiply
    279,195.18x = 385,287.60 × 151,871.28
  4. Step 4: Simplify right side
    279,195.18x = 58,514,120,980.13
  5. Step 5: Solve for x
    x = 58,514,120,980.13/279,195.18
  6. Step 6: Final answer
    x = 209,581.42

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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.