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Finding the Fourth Proportional to 281,012.80, 420,644.40 and 162,331.60

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Solution

The fourth proportional to 281,012.80, 420,644.40 and 162,331.60 is: 242,992.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,012.80 : 420,644.40 = 162,331.60 : x
  2. Step 2: Convert to fraction form
    281,012.80/420,644.40 = 162,331.60/x
  3. Step 3: Cross multiply
    281,012.80x = 420,644.40 × 162,331.60
  4. Step 4: Simplify right side
    281,012.80x = 68,283,878,483.04
  5. Step 5: Solve for x
    x = 68,283,878,483.04/281,012.80
  6. Step 6: Final answer
    x = 242,992.06

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1.5x scale

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.