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Finding the Fourth Proportional to 457,431.67, 631,259.43 and 253,486.03

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Solution

The fourth proportional to 457,431.67, 631,259.43 and 253,486.03 is: 349,812.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,431.67 : 631,259.43 = 253,486.03 : x
  2. Step 2: Convert to fraction form
    457,431.67/631,259.43 = 253,486.03/x
  3. Step 3: Cross multiply
    457,431.67x = 631,259.43 × 253,486.03
  4. Step 4: Simplify right side
    457,431.67x = 160,015,446,810.76
  5. Step 5: Solve for x
    x = 160,015,446,810.76/457,431.67
  6. Step 6: Final answer
    x = 349,812.79

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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.