Home / 312,486.25-431,231.04-169,246.31

Finding the Fourth Proportional to 312,486.25, 431,231.04 and 169,246.31

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Solution

The fourth proportional to 312,486.25, 431,231.04 and 169,246.31 is: 233,559.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,486.25 : 431,231.04 = 169,246.31 : x
  2. Step 2: Convert to fraction form
    312,486.25/431,231.04 = 169,246.31/x
  3. Step 3: Cross multiply
    312,486.25x = 431,231.04 × 169,246.31
  4. Step 4: Simplify right side
    312,486.25x = 72,984,260,121.31
  5. Step 5: Solve for x
    x = 72,984,260,121.31/312,486.25
  6. Step 6: Final answer
    x = 233,559.91

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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.