Home / 353,220.09-487,456.56-202,346.25

Finding the Fourth Proportional to 353,220.09, 487,456.56 and 202,346.25

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Solution

The fourth proportional to 353,220.09, 487,456.56 and 202,346.25 is: 279,245.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,220.09 : 487,456.56 = 202,346.25 : x
  2. Step 2: Convert to fraction form
    353,220.09/487,456.56 = 202,346.25/x
  3. Step 3: Cross multiply
    353,220.09x = 487,456.56 × 202,346.25
  4. Step 4: Simplify right side
    353,220.09x = 98,635,007,298.78
  5. Step 5: Solve for x
    x = 98,635,007,298.78/353,220.09
  6. Step 6: Final answer
    x = 279,245.18

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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.