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Finding the Fourth Proportional to 281,347.04, 422,019.92 and 217,398.18

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Solution

The fourth proportional to 281,347.04, 422,019.92 and 217,398.18 is: 326,096.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,347.04 : 422,019.92 = 217,398.18 : x
  2. Step 2: Convert to fraction form
    281,347.04/422,019.92 = 217,398.18/x
  3. Step 3: Cross multiply
    281,347.04x = 422,019.92 × 217,398.18
  4. Step 4: Simplify right side
    281,347.04x = 91,746,362,531.75
  5. Step 5: Solve for x
    x = 91,746,362,531.75/281,347.04
  6. Step 6: Final answer
    x = 326,096.78

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1.5x scale

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.