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Finding the Fourth Proportional to 263,403.60, 395,104.32 and 105,519.12

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Solution

The fourth proportional to 263,403.60, 395,104.32 and 105,519.12 is: 158,278.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,403.60 : 395,104.32 = 105,519.12 : x
  2. Step 2: Convert to fraction form
    263,403.60/395,104.32 = 105,519.12/x
  3. Step 3: Cross multiply
    263,403.60x = 395,104.32 × 105,519.12
  4. Step 4: Simplify right side
    263,403.60x = 41,691,060,154.60
  5. Step 5: Solve for x
    x = 41,691,060,154.60/263,403.60
  6. Step 6: Final answer
    x = 158,278.25

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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.