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Finding the Fourth Proportional to 457,503.28, 631,203.21 and 276,146.32

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Solution

The fourth proportional to 457,503.28, 631,203.21 and 276,146.32 is: 380,990.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,503.28 : 631,203.21 = 276,146.32 : x
  2. Step 2: Convert to fraction form
    457,503.28/631,203.21 = 276,146.32/x
  3. Step 3: Cross multiply
    457,503.28x = 631,203.21 × 276,146.32
  4. Step 4: Simplify right side
    457,503.28x = 174,304,443,613.69
  5. Step 5: Solve for x
    x = 174,304,443,613.69/457,503.28
  6. Step 6: Final answer
    x = 380,990.59

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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.