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Finding the Fourth Proportional to 298,181.08, 447,180.90 and 84,966.40

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Solution

The fourth proportional to 298,181.08, 447,180.90 and 84,966.40 is: 127,423.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,181.08 : 447,180.90 = 84,966.40 : x
  2. Step 2: Convert to fraction form
    298,181.08/447,180.90 = 84,966.40/x
  3. Step 3: Cross multiply
    298,181.08x = 447,180.90 × 84,966.40
  4. Step 4: Simplify right side
    298,181.08x = 37,995,351,221.76
  5. Step 5: Solve for x
    x = 37,995,351,221.76/298,181.08
  6. Step 6: Final answer
    x = 127,423.75

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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.