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Finding the Fourth Proportional to 300,739.21, 451,209.51 and 98,344.65

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Solution

The fourth proportional to 300,739.21, 451,209.51 and 98,344.65 is: 147,549.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,739.21 : 451,209.51 = 98,344.65 : x
  2. Step 2: Convert to fraction form
    300,739.21/451,209.51 = 98,344.65/x
  3. Step 3: Cross multiply
    300,739.21x = 451,209.51 × 98,344.65
  4. Step 4: Simplify right side
    300,739.21x = 44,374,041,337.62
  5. Step 5: Solve for x
    x = 44,374,041,337.62/300,739.21
  6. Step 6: Final answer
    x = 147,549.90

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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.