Home / 371,570.20-557,355.30-221,979.40

Finding the Fourth Proportional to 371,570.20, 557,355.30 and 221,979.40

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Solution

The fourth proportional to 371,570.20, 557,355.30 and 221,979.40 is: 332,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,570.20 : 557,355.30 = 221,979.40 : x
  2. Step 2: Convert to fraction form
    371,570.20/557,355.30 = 221,979.40/x
  3. Step 3: Cross multiply
    371,570.20x = 557,355.30 × 221,979.40
  4. Step 4: Simplify right side
    371,570.20x = 123,721,395,080.82
  5. Step 5: Solve for x
    x = 123,721,395,080.82/371,570.20
  6. Step 6: Final answer
    x = 332,969.10

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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.