Home / 438,414.30-657,621.45-202,218.30

Finding the Fourth Proportional to 438,414.30, 657,621.45 and 202,218.30

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Solution

The fourth proportional to 438,414.30, 657,621.45 and 202,218.30 is: 303,327.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,414.30 : 657,621.45 = 202,218.30 : x
  2. Step 2: Convert to fraction form
    438,414.30/657,621.45 = 202,218.30/x
  3. Step 3: Cross multiply
    438,414.30x = 657,621.45 × 202,218.30
  4. Step 4: Simplify right side
    438,414.30x = 132,983,091,662.54
  5. Step 5: Solve for x
    x = 132,983,091,662.54/438,414.30
  6. Step 6: Final answer
    x = 303,327.45

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.