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Finding the Fourth Proportional to 270,196.80, 405,223.68 and 80,612.16

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Solution

The fourth proportional to 270,196.80, 405,223.68 and 80,612.16 is: 120,896.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,196.80 : 405,223.68 = 80,612.16 : x
  2. Step 2: Convert to fraction form
    270,196.80/405,223.68 = 80,612.16/x
  3. Step 3: Cross multiply
    270,196.80x = 405,223.68 × 80,612.16
  4. Step 4: Simplify right side
    270,196.80x = 32,665,956,127.95
  5. Step 5: Solve for x
    x = 32,665,956,127.95/270,196.80
  6. Step 6: Final answer
    x = 120,896.90

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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.