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Finding the Fourth Proportional to 270,585.90, 405,883.44 and 81,002.16

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Solution

The fourth proportional to 270,585.90, 405,883.44 and 81,002.16 is: 121,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,585.90 : 405,883.44 = 81,002.16 : x
  2. Step 2: Convert to fraction form
    270,585.90/405,883.44 = 81,002.16/x
  3. Step 3: Cross multiply
    270,585.90x = 405,883.44 × 81,002.16
  4. Step 4: Simplify right side
    270,585.90x = 32,877,435,348.23
  5. Step 5: Solve for x
    x = 32,877,435,348.23/270,585.90
  6. Step 6: Final answer
    x = 121,504.61

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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.