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Finding the Fourth Proportional to 270,487.10, 405,769.05 and 83,479.10

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Solution

The fourth proportional to 270,487.10, 405,769.05 and 83,479.10 is: 125,230.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,487.10 : 405,769.05 = 83,479.10 : x
  2. Step 2: Convert to fraction form
    270,487.10/405,769.05 = 83,479.10/x
  3. Step 3: Cross multiply
    270,487.10x = 405,769.05 × 83,479.10
  4. Step 4: Simplify right side
    270,487.10x = 33,873,235,101.86
  5. Step 5: Solve for x
    x = 33,873,235,101.86/270,487.10
  6. Step 6: Final answer
    x = 125,230.50

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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.