Home / 261,004.20-391,506.30-74,015.70

Finding the Fourth Proportional to 261,004.20, 391,506.30 and 74,015.70

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Solution

The fourth proportional to 261,004.20, 391,506.30 and 74,015.70 is: 111,023.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,004.20 : 391,506.30 = 74,015.70 : x
  2. Step 2: Convert to fraction form
    261,004.20/391,506.30 = 74,015.70/x
  3. Step 3: Cross multiply
    261,004.20x = 391,506.30 × 74,015.70
  4. Step 4: Simplify right side
    261,004.20x = 28,977,612,848.91
  5. Step 5: Solve for x
    x = 28,977,612,848.91/261,004.20
  6. Step 6: Final answer
    x = 111,023.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.