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Finding the Fourth Proportional to 207,279.87, 310,919.82 and 57,520.20

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Solution

The fourth proportional to 207,279.87, 310,919.82 and 57,520.20 is: 86,280.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,279.87 : 310,919.82 = 57,520.20 : x
  2. Step 2: Convert to fraction form
    207,279.87/310,919.82 = 57,520.20/x
  3. Step 3: Cross multiply
    207,279.87x = 310,919.82 × 57,520.20
  4. Step 4: Simplify right side
    207,279.87x = 17,884,170,230.36
  5. Step 5: Solve for x
    x = 17,884,170,230.36/207,279.87
  6. Step 6: Final answer
    x = 86,280.30

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1.5x scale

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.