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Finding the Fourth Proportional to 298,279.74, 447,420.54 and 73,640.20

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Solution

The fourth proportional to 298,279.74, 447,420.54 and 73,640.20 is: 110,460.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,279.74 : 447,420.54 = 73,640.20 : x
  2. Step 2: Convert to fraction form
    298,279.74/447,420.54 = 73,640.20/x
  3. Step 3: Cross multiply
    298,279.74x = 447,420.54 × 73,640.20
  4. Step 4: Simplify right side
    298,279.74x = 32,948,138,049.71
  5. Step 5: Solve for x
    x = 32,948,138,049.71/298,279.74
  6. Step 6: Final answer
    x = 110,460.53

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1.5x scale

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.