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Finding the Fourth Proportional to 287,608.32, 431,451.36 and 270,112.32

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Solution

The fourth proportional to 287,608.32, 431,451.36 and 270,112.32 is: 405,204.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,608.32 : 431,451.36 = 270,112.32 : x
  2. Step 2: Convert to fraction form
    287,608.32/431,451.36 = 270,112.32/x
  3. Step 3: Cross multiply
    287,608.32x = 431,451.36 × 270,112.32
  4. Step 4: Simplify right side
    287,608.32x = 116,540,327,816.76
  5. Step 5: Solve for x
    x = 116,540,327,816.76/287,608.32
  6. Step 6: Final answer
    x = 405,204.99

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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.