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Finding the Fourth Proportional to 315,423.89, 435,226.75 and 179,449.90

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Solution

The fourth proportional to 315,423.89, 435,226.75 and 179,449.90 is: 247,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,423.89 : 435,226.75 = 179,449.90 : x
  2. Step 2: Convert to fraction form
    315,423.89/435,226.75 = 179,449.90/x
  3. Step 3: Cross multiply
    315,423.89x = 435,226.75 × 179,449.90
  4. Step 4: Simplify right side
    315,423.89x = 78,101,396,764.83
  5. Step 5: Solve for x
    x = 78,101,396,764.83/315,423.89
  6. Step 6: Final answer
    x = 247,607.74

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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.