Home / 281,012.30-420,643.65-162,331.10

Finding the Fourth Proportional to 281,012.30, 420,643.65 and 162,331.10

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Solution

The fourth proportional to 281,012.30, 420,643.65 and 162,331.10 is: 242,991.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,012.30 : 420,643.65 = 162,331.10 : x
  2. Step 2: Convert to fraction form
    281,012.30/420,643.65 = 162,331.10/x
  3. Step 3: Cross multiply
    281,012.30x = 420,643.65 × 162,331.10
  4. Step 4: Simplify right side
    281,012.30x = 68,283,546,412.52
  5. Step 5: Solve for x
    x = 68,283,546,412.52/281,012.30
  6. Step 6: Final answer
    x = 242,991.31

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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.