Home / 281,719.60-423,016.80-163,621.60

Finding the Fourth Proportional to 281,719.60, 423,016.80 and 163,621.60

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Solution

The fourth proportional to 281,719.60, 423,016.80 and 163,621.60 is: 245,686.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,719.60 : 423,016.80 = 163,621.60 : x
  2. Step 2: Convert to fraction form
    281,719.60/423,016.80 = 163,621.60/x
  3. Step 3: Cross multiply
    281,719.60x = 423,016.80 × 163,621.60
  4. Step 4: Simplify right side
    281,719.60x = 69,214,685,642.88
  5. Step 5: Solve for x
    x = 69,214,685,642.88/281,719.60
  6. Step 6: Final answer
    x = 245,686.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.