Home / 279,091.17-385,134.08-158,240.57

Finding the Fourth Proportional to 279,091.17, 385,134.08 and 158,240.57

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Solution

The fourth proportional to 279,091.17, 385,134.08 and 158,240.57 is: 218,365.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,091.17 : 385,134.08 = 158,240.57 : x
  2. Step 2: Convert to fraction form
    279,091.17/385,134.08 = 158,240.57/x
  3. Step 3: Cross multiply
    279,091.17x = 385,134.08 × 158,240.57
  4. Step 4: Simplify right side
    279,091.17x = 60,943,833,628.75
  5. Step 5: Solve for x
    x = 60,943,833,628.75/279,091.17
  6. Step 6: Final answer
    x = 218,365.32

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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.