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Finding the Fourth Proportional to 393,056.00, 542,414.01 and 220,974.72

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Solution

The fourth proportional to 393,056.00, 542,414.01 and 220,974.72 is: 304,943.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,056.00 : 542,414.01 = 220,974.72 : x
  2. Step 2: Convert to fraction form
    393,056.00/542,414.01 = 220,974.72/x
  3. Step 3: Cross multiply
    393,056.00x = 542,414.01 × 220,974.72
  4. Step 4: Simplify right side
    393,056.00x = 119,859,783,983.83
  5. Step 5: Solve for x
    x = 119,859,783,983.83/393,056.00
  6. Step 6: Final answer
    x = 304,943.28

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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.