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Finding the Fourth Proportional to 489,274.23, 675,232.13 and 274,428.11

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Solution

The fourth proportional to 489,274.23, 675,232.13 and 274,428.11 is: 378,729.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,274.23 : 675,232.13 = 274,428.11 : x
  2. Step 2: Convert to fraction form
    489,274.23/675,232.13 = 274,428.11/x
  3. Step 3: Cross multiply
    489,274.23x = 675,232.13 × 274,428.11
  4. Step 4: Simplify right side
    489,274.23x = 185,302,677,563.11
  5. Step 5: Solve for x
    x = 185,302,677,563.11/489,274.23
  6. Step 6: Final answer
    x = 378,729.69

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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.