Home / 281,821.20-388,916.42-160,978.52

Finding the Fourth Proportional to 281,821.20, 388,916.42 and 160,978.52

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Solution

The fourth proportional to 281,821.20, 388,916.42 and 160,978.52 is: 222,152.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,821.20 : 388,916.42 = 160,978.52 : x
  2. Step 2: Convert to fraction form
    281,821.20/388,916.42 = 160,978.52/x
  3. Step 3: Cross multiply
    281,821.20x = 388,916.42 × 160,978.52
  4. Step 4: Simplify right side
    281,821.20x = 62,607,189,695.30
  5. Step 5: Solve for x
    x = 62,607,189,695.30/281,821.20
  6. Step 6: Final answer
    x = 222,152.16

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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.