Home / 398,828.14-550,384.56-217,543.97

Finding the Fourth Proportional to 398,828.14, 550,384.56 and 217,543.97

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Solution

The fourth proportional to 398,828.14, 550,384.56 and 217,543.97 is: 300,211.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,828.14 : 550,384.56 = 217,543.97 : x
  2. Step 2: Convert to fraction form
    398,828.14/550,384.56 = 217,543.97/x
  3. Step 3: Cross multiply
    398,828.14x = 550,384.56 × 217,543.97
  4. Step 4: Simplify right side
    398,828.14x = 119,732,842,209.10
  5. Step 5: Solve for x
    x = 119,732,842,209.10/398,828.14
  6. Step 6: Final answer
    x = 300,211.62

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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.