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Finding the Fourth Proportional to 457,401.26, 631,204.31 and 253,450.40

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Solution

The fourth proportional to 457,401.26, 631,204.31 and 253,450.40 is: 349,756.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,401.26 : 631,204.31 = 253,450.40 : x
  2. Step 2: Convert to fraction form
    457,401.26/631,204.31 = 253,450.40/x
  3. Step 3: Cross multiply
    457,401.26x = 631,204.31 × 253,450.40
  4. Step 4: Simplify right side
    457,401.26x = 159,978,982,328.83
  5. Step 5: Solve for x
    x = 159,978,982,328.83/457,401.26
  6. Step 6: Final answer
    x = 349,756.32

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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.