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Finding the Fourth Proportional to 354,718.49, 489,521.88 and 193,583.88

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Solution

The fourth proportional to 354,718.49, 489,521.88 and 193,583.88 is: 267,151.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,718.49 : 489,521.88 = 193,583.88 : x
  2. Step 2: Convert to fraction form
    354,718.49/489,521.88 = 193,583.88/x
  3. Step 3: Cross multiply
    354,718.49x = 489,521.88 × 193,583.88
  4. Step 4: Simplify right side
    354,718.49x = 94,763,544,875.29
  5. Step 5: Solve for x
    x = 94,763,544,875.29/354,718.49
  6. Step 6: Final answer
    x = 267,151.41

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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.