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Finding the Fourth Proportional to 356,371.92, 491,606.80 and 220,362.40

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Solution

The fourth proportional to 356,371.92, 491,606.80 and 220,362.40 is: 303,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,371.92 : 491,606.80 = 220,362.40 : x
  2. Step 2: Convert to fraction form
    356,371.92/491,606.80 = 220,362.40/x
  3. Step 3: Cross multiply
    356,371.92x = 491,606.80 × 220,362.40
  4. Step 4: Simplify right side
    356,371.92x = 108,331,654,304.32
  5. Step 5: Solve for x
    x = 108,331,654,304.32/356,371.92
  6. Step 6: Final answer
    x = 303,984.82

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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.