Home / 312,743.52-431,575.44-185,343.60

Finding the Fourth Proportional to 312,743.52, 431,575.44 and 185,343.60

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Solution

The fourth proportional to 312,743.52, 431,575.44 and 185,343.60 is: 255,767.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,743.52 : 431,575.44 = 185,343.60 : x
  2. Step 2: Convert to fraction form
    312,743.52/431,575.44 = 185,343.60/x
  3. Step 3: Cross multiply
    312,743.52x = 431,575.44 × 185,343.60
  4. Step 4: Simplify right side
    312,743.52x = 79,989,745,721.18
  5. Step 5: Solve for x
    x = 79,989,745,721.18/312,743.52
  6. Step 6: Final answer
    x = 255,767.88

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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.