Home / 279,005.28-385,029.72-151,680.96

Finding the Fourth Proportional to 279,005.28, 385,029.72 and 151,680.96

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Solution

The fourth proportional to 279,005.28, 385,029.72 and 151,680.96 is: 209,321.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,005.28 : 385,029.72 = 151,680.96 : x
  2. Step 2: Convert to fraction form
    279,005.28/385,029.72 = 151,680.96/x
  3. Step 3: Cross multiply
    279,005.28x = 385,029.72 × 151,680.96
  4. Step 4: Simplify right side
    279,005.28x = 58,401,677,558.13
  5. Step 5: Solve for x
    x = 58,401,677,558.13/279,005.28
  6. Step 6: Final answer
    x = 209,321.05

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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.