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Finding the Fourth Proportional to 258,348.65, 387,597.09 and 108,511.88

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Solution

The fourth proportional to 258,348.65, 387,597.09 and 108,511.88 is: 162,798.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,348.65 : 387,597.09 = 108,511.88 : x
  2. Step 2: Convert to fraction form
    258,348.65/387,597.09 = 108,511.88/x
  3. Step 3: Cross multiply
    258,348.65x = 387,597.09 × 108,511.88
  4. Step 4: Simplify right side
    258,348.65x = 42,058,888,918.43
  5. Step 5: Solve for x
    x = 42,058,888,918.43/258,348.65
  6. Step 6: Final answer
    x = 162,798.95

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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.