Home / 281,839.11-422,719.79-155,712.39

Finding the Fourth Proportional to 281,839.11, 422,719.79 and 155,712.39

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Solution

The fourth proportional to 281,839.11, 422,719.79 and 155,712.39 is: 233,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,839.11 : 422,719.79 = 155,712.39 : x
  2. Step 2: Convert to fraction form
    281,839.11/422,719.79 = 155,712.39/x
  3. Step 3: Cross multiply
    281,839.11x = 422,719.79 × 155,712.39
  4. Step 4: Simplify right side
    281,839.11x = 65,822,708,022.64
  5. Step 5: Solve for x
    x = 65,822,708,022.64/281,839.11
  6. Step 6: Final answer
    x = 233,547.10

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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.