Home / 281,046.90-387,847.78-153,719.76

Finding the Fourth Proportional to 281,046.90, 387,847.78 and 153,719.76

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Solution

The fourth proportional to 281,046.90, 387,847.78 and 153,719.76 is: 212,134.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,046.90 : 387,847.78 = 153,719.76 : x
  2. Step 2: Convert to fraction form
    281,046.90/387,847.78 = 153,719.76/x
  3. Step 3: Cross multiply
    281,046.90x = 387,847.78 × 153,719.76
  4. Step 4: Simplify right side
    281,046.90x = 59,619,867,658.13
  5. Step 5: Solve for x
    x = 59,619,867,658.13/281,046.90
  6. Step 6: Final answer
    x = 212,134.94

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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.