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Finding the Fourth Proportional to 356,365.92, 491,598.54 and 220,356.38

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Solution

The fourth proportional to 356,365.92, 491,598.54 and 220,356.38 is: 303,976.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,365.92 : 491,598.54 = 220,356.38 : x
  2. Step 2: Convert to fraction form
    356,365.92/491,598.54 = 220,356.38/x
  3. Step 3: Cross multiply
    356,365.92x = 491,598.54 × 220,356.38
  4. Step 4: Simplify right side
    356,365.92x = 108,326,874,687.69
  5. Step 5: Solve for x
    x = 108,326,874,687.69/356,365.92
  6. Step 6: Final answer
    x = 303,976.53

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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.