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Finding the Fourth Proportional to 298,934, 447,293.40 and 239,589.68

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Solution

The fourth proportional to 298,934, 447,293.40 and 239,589.68 is: 358,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,934 : 447,293.40 = 239,589.68 : x
  2. Step 2: Convert to fraction form
    298,934/447,293.40 = 239,589.68/x
  3. Step 3: Cross multiply
    298,934x = 447,293.40 × 239,589.68
  4. Step 4: Simplify right side
    298,934x = 107,166,882,572.11
  5. Step 5: Solve for x
    x = 107,166,882,572.11/298,934
  6. Step 6: Final answer
    x = 358,496.80

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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.