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Finding the Fourth Proportional to 270,380.50, 405,541.54 and 90,445.53

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Solution

The fourth proportional to 270,380.50, 405,541.54 and 90,445.53 is: 135,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,380.50 : 405,541.54 = 90,445.53 : x
  2. Step 2: Convert to fraction form
    270,380.50/405,541.54 = 90,445.53/x
  3. Step 3: Cross multiply
    270,380.50x = 405,541.54 × 90,445.53
  4. Step 4: Simplify right side
    270,380.50x = 36,679,419,522.32
  5. Step 5: Solve for x
    x = 36,679,419,522.32/270,380.50
  6. Step 6: Final answer
    x = 135,658.52

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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.