Home / 205,979.40-308,738.70-117,275.40

Finding the Fourth Proportional to 205,979.40, 308,738.70 and 117,275.40

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Solution

The fourth proportional to 205,979.40, 308,738.70 and 117,275.40 is: 175,781.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,979.40 : 308,738.70 = 117,275.40 : x
  2. Step 2: Convert to fraction form
    205,979.40/308,738.70 = 117,275.40/x
  3. Step 3: Cross multiply
    205,979.40x = 308,738.70 × 117,275.40
  4. Step 4: Simplify right side
    205,979.40x = 36,207,454,537.98
  5. Step 5: Solve for x
    x = 36,207,454,537.98/205,979.40
  6. Step 6: Final answer
    x = 175,781.92

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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.