Home / 279,182.12-385,339.75-158,394.11

Finding the Fourth Proportional to 279,182.12, 385,339.75 and 158,394.11

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Solution

The fourth proportional to 279,182.12, 385,339.75 and 158,394.11 is: 218,622.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,182.12 : 385,339.75 = 158,394.11 : x
  2. Step 2: Convert to fraction form
    279,182.12/385,339.75 = 158,394.11/x
  3. Step 3: Cross multiply
    279,182.12x = 385,339.75 × 158,394.11
  4. Step 4: Simplify right side
    279,182.12x = 61,035,544,822.17
  5. Step 5: Solve for x
    x = 61,035,544,822.17/279,182.12
  6. Step 6: Final answer
    x = 218,622.69

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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.