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Finding the Fourth Proportional to 261,348.88, 360,809.22 and 199,979.68

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Solution

The fourth proportional to 261,348.88, 360,809.22 and 199,979.68 is: 276,085.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,348.88 : 360,809.22 = 199,979.68 : x
  2. Step 2: Convert to fraction form
    261,348.88/360,809.22 = 199,979.68/x
  3. Step 3: Cross multiply
    261,348.88x = 360,809.22 × 199,979.68
  4. Step 4: Simplify right side
    261,348.88x = 72,154,512,356.65
  5. Step 5: Solve for x
    x = 72,154,512,356.65/261,348.88
  6. Step 6: Final answer
    x = 276,085.03

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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.