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Finding the Fourth Proportional to 175,280.80, 262,460.40 and 128,279.20

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Solution

The fourth proportional to 175,280.80, 262,460.40 and 128,279.20 is: 192,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,280.80 : 262,460.40 = 128,279.20 : x
  2. Step 2: Convert to fraction form
    175,280.80/262,460.40 = 128,279.20/x
  3. Step 3: Cross multiply
    175,280.80x = 262,460.40 × 128,279.20
  4. Step 4: Simplify right side
    175,280.80x = 33,668,210,143.68
  5. Step 5: Solve for x
    x = 33,668,210,143.68/175,280.80
  6. Step 6: Final answer
    x = 192,081.56

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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.