Home / 281,240.12-388,101.79-160,420.52

Finding the Fourth Proportional to 281,240.12, 388,101.79 and 160,420.52

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Solution

The fourth proportional to 281,240.12, 388,101.79 and 160,420.52 is: 221,374.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,240.12 : 388,101.79 = 160,420.52 : x
  2. Step 2: Convert to fraction form
    281,240.12/388,101.79 = 160,420.52/x
  3. Step 3: Cross multiply
    281,240.12x = 388,101.79 × 160,420.52
  4. Step 4: Simplify right side
    281,240.12x = 62,259,490,964.73
  5. Step 5: Solve for x
    x = 62,259,490,964.73/281,240.12
  6. Step 6: Final answer
    x = 221,374.86

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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.