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Finding the Fourth Proportional to 327,707.62, 491,752.42 and 138,156.34

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Solution

The fourth proportional to 327,707.62, 491,752.42 and 138,156.34 is: 207,315.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,707.62 : 491,752.42 = 138,156.34 : x
  2. Step 2: Convert to fraction form
    327,707.62/491,752.42 = 138,156.34/x
  3. Step 3: Cross multiply
    327,707.62x = 491,752.42 × 138,156.34
  4. Step 4: Simplify right side
    327,707.62x = 67,938,714,533.34
  5. Step 5: Solve for x
    x = 67,938,714,533.34/327,707.62
  6. Step 6: Final answer
    x = 207,315.03

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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.