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Finding the Fourth Proportional to 489,838.98, 675,931.56 and 274,937.06

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Solution

The fourth proportional to 489,838.98, 675,931.56 and 274,937.06 is: 379,387.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,838.98 : 675,931.56 = 274,937.06 : x
  2. Step 2: Convert to fraction form
    489,838.98/675,931.56 = 274,937.06/x
  3. Step 3: Cross multiply
    489,838.98x = 675,931.56 × 274,937.06
  4. Step 4: Simplify right side
    489,838.98x = 185,838,635,867.61
  5. Step 5: Solve for x
    x = 185,838,635,867.61/489,838.98
  6. Step 6: Final answer
    x = 379,387.19

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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.