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Finding the Fourth Proportional to 250,451.96, 345,624.70 and 135,730.84

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Solution

The fourth proportional to 250,451.96, 345,624.70 and 135,730.84 is: 187,309.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,451.96 : 345,624.70 = 135,730.84 : x
  2. Step 2: Convert to fraction form
    250,451.96/345,624.70 = 135,730.84/x
  3. Step 3: Cross multiply
    250,451.96x = 345,624.70 × 135,730.84
  4. Step 4: Simplify right side
    250,451.96x = 46,911,930,855.75
  5. Step 5: Solve for x
    x = 46,911,930,855.75/250,451.96
  6. Step 6: Final answer
    x = 187,309.10

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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.