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Finding the Fourth Proportional to 270,280.96, 405,470.84 and 90,349.36

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Solution

The fourth proportional to 270,280.96, 405,470.84 and 90,349.36 is: 135,540.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,280.96 : 405,470.84 = 90,349.36 : x
  2. Step 2: Convert to fraction form
    270,280.96/405,470.84 = 90,349.36/x
  3. Step 3: Cross multiply
    270,280.96x = 405,470.84 × 90,349.36
  4. Step 4: Simplify right side
    270,280.96x = 36,634,030,892.66
  5. Step 5: Solve for x
    x = 36,634,030,892.66/270,280.96
  6. Step 6: Final answer
    x = 135,540.55

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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.