Home / 312,453.60-431,185.02-169,213.61

Finding the Fourth Proportional to 312,453.60, 431,185.02 and 169,213.61

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Solution

The fourth proportional to 312,453.60, 431,185.02 and 169,213.61 is: 233,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,453.60 : 431,185.02 = 169,213.61 : x
  2. Step 2: Convert to fraction form
    312,453.60/431,185.02 = 169,213.61/x
  3. Step 3: Cross multiply
    312,453.60x = 431,185.02 × 169,213.61
  4. Step 4: Simplify right side
    312,453.60x = 72,962,372,781.94
  5. Step 5: Solve for x
    x = 72,962,372,781.94/312,453.60
  6. Step 6: Final answer
    x = 233,514.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.