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Finding the Fourth Proportional to 498,322.33, 687,675.22 and 271,969.45

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Solution

The fourth proportional to 498,322.33, 687,675.22 and 271,969.45 is: 375,312.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,322.33 : 687,675.22 = 271,969.45 : x
  2. Step 2: Convert to fraction form
    498,322.33/687,675.22 = 271,969.45/x
  3. Step 3: Cross multiply
    498,322.33x = 687,675.22 × 271,969.45
  4. Step 4: Simplify right side
    498,322.33x = 187,026,651,362.03
  5. Step 5: Solve for x
    x = 187,026,651,362.03/498,322.33
  6. Step 6: Final answer
    x = 375,312.60

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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.