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Finding the Fourth Proportional to 457,871.22, 631,817.25 and 253,918.58

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Solution

The fourth proportional to 457,871.22, 631,817.25 and 253,918.58 is: 350,382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,871.22 : 631,817.25 = 253,918.58 : x
  2. Step 2: Convert to fraction form
    457,871.22/631,817.25 = 253,918.58/x
  3. Step 3: Cross multiply
    457,871.22x = 631,817.25 × 253,918.58
  4. Step 4: Simplify right side
    457,871.22x = 160,430,135,780.42
  5. Step 5: Solve for x
    x = 160,430,135,780.42/457,871.22
  6. Step 6: Final answer
    x = 350,382.66

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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.