Home / 312,948.31-431,868.90-169,708.32

Finding the Fourth Proportional to 312,948.31, 431,868.90 and 169,708.32

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Solution

The fourth proportional to 312,948.31, 431,868.90 and 169,708.32 is: 234,197.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,948.31 : 431,868.90 = 169,708.32 : x
  2. Step 2: Convert to fraction form
    312,948.31/431,868.90 = 169,708.32/x
  3. Step 3: Cross multiply
    312,948.31x = 431,868.90 × 169,708.32
  4. Step 4: Simplify right side
    312,948.31x = 73,291,745,479.25
  5. Step 5: Solve for x
    x = 73,291,745,479.25/312,948.31
  6. Step 6: Final answer
    x = 234,197.61

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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.