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Finding the Fourth Proportional to 371,570.70, 557,356.05 and 221,979.90

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Solution

The fourth proportional to 371,570.70, 557,356.05 and 221,979.90 is: 332,969.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,570.70 : 557,356.05 = 221,979.90 : x
  2. Step 2: Convert to fraction form
    371,570.70/557,356.05 = 221,979.90/x
  3. Step 3: Cross multiply
    371,570.70x = 557,356.05 × 221,979.90
  4. Step 4: Simplify right side
    371,570.70x = 123,721,840,243.40
  5. Step 5: Solve for x
    x = 123,721,840,243.40/371,570.70
  6. Step 6: Final answer
    x = 332,969.85

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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.