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Finding the Fourth Proportional to 457,489.53, 631,184.31 and 276,132.56

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Solution

The fourth proportional to 457,489.53, 631,184.31 and 276,132.56 is: 380,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,489.53 : 631,184.31 = 276,132.56 : x
  2. Step 2: Convert to fraction form
    457,489.53/631,184.31 = 276,132.56/x
  3. Step 3: Cross multiply
    457,489.53x = 631,184.31 × 276,132.56
  4. Step 4: Simplify right side
    457,489.53x = 174,290,536,196.21
  5. Step 5: Solve for x
    x = 174,290,536,196.21/457,489.53
  6. Step 6: Final answer
    x = 380,971.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.