Home / 279,621.60-385,844.40-158,719.20

Finding the Fourth Proportional to 279,621.60, 385,844.40 and 158,719.20

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Solution

The fourth proportional to 279,621.60, 385,844.40 and 158,719.20 is: 219,013.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,621.60 : 385,844.40 = 158,719.20 : x
  2. Step 2: Convert to fraction form
    279,621.60/385,844.40 = 158,719.20/x
  3. Step 3: Cross multiply
    279,621.60x = 385,844.40 × 158,719.20
  4. Step 4: Simplify right side
    279,621.60x = 61,240,914,492.48
  5. Step 5: Solve for x
    x = 61,240,914,492.48/279,621.60
  6. Step 6: Final answer
    x = 219,013.53

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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.