Home / 208,744.34-288,216.97-128,279.75

Finding the Fourth Proportional to 208,744.34, 288,216.97 and 128,279.75

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Solution

The fourth proportional to 208,744.34, 288,216.97 and 128,279.75 is: 177,118.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,744.34 : 288,216.97 = 128,279.75 : x
  2. Step 2: Convert to fraction form
    208,744.34/288,216.97 = 128,279.75/x
  3. Step 3: Cross multiply
    208,744.34x = 288,216.97 × 128,279.75
  4. Step 4: Simplify right side
    208,744.34x = 36,972,399,095.57
  5. Step 5: Solve for x
    x = 36,972,399,095.57/208,744.34
  6. Step 6: Final answer
    x = 177,118.10

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1.5x scale

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.