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Finding the Fourth Proportional to 415,996.80, 574,074.06 and 225,010.20

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Solution

The fourth proportional to 415,996.80, 574,074.06 and 225,010.20 is: 310,513.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,996.80 : 574,074.06 = 225,010.20 : x
  2. Step 2: Convert to fraction form
    415,996.80/574,074.06 = 225,010.20/x
  3. Step 3: Cross multiply
    415,996.80x = 574,074.06 × 225,010.20
  4. Step 4: Simplify right side
    415,996.80x = 129,172,519,055.41
  5. Step 5: Solve for x
    x = 129,172,519,055.41/415,996.80
  6. Step 6: Final answer
    x = 310,513.25

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Double scale
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Similar ratio
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1.5x scale

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.