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Finding the Fourth Proportional to 223,500.60, 335,250.90 and 139,519.80

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Solution

The fourth proportional to 223,500.60, 335,250.90 and 139,519.80 is: 209,279.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,500.60 : 335,250.90 = 139,519.80 : x
  2. Step 2: Convert to fraction form
    223,500.60/335,250.90 = 139,519.80/x
  3. Step 3: Cross multiply
    223,500.60x = 335,250.90 × 139,519.80
  4. Step 4: Simplify right side
    223,500.60x = 46,774,138,517.82
  5. Step 5: Solve for x
    x = 46,774,138,517.82/223,500.60
  6. Step 6: Final answer
    x = 209,279.70

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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.