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Finding the Fourth Proportional to 457,254.21, 631,010.70 and 253,318.37

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Solution

The fourth proportional to 457,254.21, 631,010.70 and 253,318.37 is: 349,579.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,254.21 : 631,010.70 = 253,318.37 : x
  2. Step 2: Convert to fraction form
    457,254.21/631,010.70 = 253,318.37/x
  3. Step 3: Cross multiply
    457,254.21x = 631,010.70 × 253,318.37
  4. Step 4: Simplify right side
    457,254.21x = 159,846,603,554.09
  5. Step 5: Solve for x
    x = 159,846,603,554.09/457,254.21
  6. Step 6: Final answer
    x = 349,579.29

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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.