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Finding the Fourth Proportional to 265,669.04, 398,425.80 and 218,805.68

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Solution

The fourth proportional to 265,669.04, 398,425.80 and 218,805.68 is: 328,144.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,669.04 : 398,425.80 = 218,805.68 : x
  2. Step 2: Convert to fraction form
    265,669.04/398,425.80 = 218,805.68/x
  3. Step 3: Cross multiply
    265,669.04x = 398,425.80 × 218,805.68
  4. Step 4: Simplify right side
    265,669.04x = 87,177,828,098.54
  5. Step 5: Solve for x
    x = 87,177,828,098.54/265,669.04
  6. Step 6: Final answer
    x = 328,144.48

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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.