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Finding the Fourth Proportional to 327,148.67, 490,746.33 and 87,261.21

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Solution

The fourth proportional to 327,148.67, 490,746.33 and 87,261.21 is: 130,898.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,148.67 : 490,746.33 = 87,261.21 : x
  2. Step 2: Convert to fraction form
    327,148.67/490,746.33 = 87,261.21/x
  3. Step 3: Cross multiply
    327,148.67x = 490,746.33 × 87,261.21
  4. Step 4: Simplify right side
    327,148.67x = 42,823,118,558.86
  5. Step 5: Solve for x
    x = 42,823,118,558.86/327,148.67
  6. Step 6: Final answer
    x = 130,898.04

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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.