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Finding the Fourth Proportional to 457,400.51, 631,203.27 and 253,449.65

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Solution

The fourth proportional to 457,400.51, 631,203.27 and 253,449.65 is: 349,755.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,400.51 : 631,203.27 = 253,449.65 : x
  2. Step 2: Convert to fraction form
    457,400.51/631,203.27 = 253,449.65/x
  3. Step 3: Cross multiply
    457,400.51x = 631,203.27 × 253,449.65
  4. Step 4: Simplify right side
    457,400.51x = 159,978,244,704.34
  5. Step 5: Solve for x
    x = 159,978,244,704.34/457,400.51
  6. Step 6: Final answer
    x = 349,755.29

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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.