Home / 398,825.60-550,381.03-217,541.43

Finding the Fourth Proportional to 398,825.60, 550,381.03 and 217,541.43

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Solution

The fourth proportional to 398,825.60, 550,381.03 and 217,541.43 is: 300,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,825.60 : 550,381.03 = 217,541.43 : x
  2. Step 2: Convert to fraction form
    398,825.60/550,381.03 = 217,541.43/x
  3. Step 3: Cross multiply
    398,825.60x = 550,381.03 × 217,541.43
  4. Step 4: Simplify right side
    398,825.60x = 119,730,675,767.22
  5. Step 5: Solve for x
    x = 119,730,675,767.22/398,825.60
  6. Step 6: Final answer
    x = 300,208.10

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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.