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Finding the Fourth Proportional to 298,932, 447,290.40 and 239,587.68

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Solution

The fourth proportional to 298,932, 447,290.40 and 239,587.68 is: 358,493.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,932 : 447,290.40 = 239,587.68 : x
  2. Step 2: Convert to fraction form
    298,932/447,290.40 = 239,587.68/x
  3. Step 3: Cross multiply
    298,932x = 447,290.40 × 239,587.68
  4. Step 4: Simplify right side
    298,932x = 107,165,269,222.27
  5. Step 5: Solve for x
    x = 107,165,269,222.27/298,932
  6. Step 6: Final answer
    x = 358,493.80

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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.