Home / 391,111.58-539,734.20-212,263.58

Finding the Fourth Proportional to 391,111.58, 539,734.20 and 212,263.58

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Solution

The fourth proportional to 391,111.58, 539,734.20 and 212,263.58 is: 292,923.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,111.58 : 539,734.20 = 212,263.58 : x
  2. Step 2: Convert to fraction form
    391,111.58/539,734.20 = 212,263.58/x
  3. Step 3: Cross multiply
    391,111.58x = 539,734.20 × 212,263.58
  4. Step 4: Simplify right side
    391,111.58x = 114,565,913,540.44
  5. Step 5: Solve for x
    x = 114,565,913,540.44/391,111.58
  6. Step 6: Final answer
    x = 292,923.86

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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.