Home / 312,595.20-431,357.52-190,070.55

Finding the Fourth Proportional to 312,595.20, 431,357.52 and 190,070.55

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Solution

The fourth proportional to 312,595.20, 431,357.52 and 190,070.55 is: 262,282.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,595.20 : 431,357.52 = 190,070.55 : x
  2. Step 2: Convert to fraction form
    312,595.20/431,357.52 = 190,070.55/x
  3. Step 3: Cross multiply
    312,595.20x = 431,357.52 × 190,070.55
  4. Step 4: Simplify right side
    312,595.20x = 81,988,361,073.04
  5. Step 5: Solve for x
    x = 81,988,361,073.04/312,595.20
  6. Step 6: Final answer
    x = 262,282.85

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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.