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Finding the Fourth Proportional to 354,618.82, 489,373.40 and 193,473.89

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Solution

The fourth proportional to 354,618.82, 489,373.40 and 193,473.89 is: 266,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,618.82 : 489,373.40 = 193,473.89 : x
  2. Step 2: Convert to fraction form
    354,618.82/489,373.40 = 193,473.89/x
  3. Step 3: Cross multiply
    354,618.82x = 489,373.40 × 193,473.89
  4. Step 4: Simplify right side
    354,618.82x = 94,680,971,946.29
  5. Step 5: Solve for x
    x = 94,680,971,946.29/354,618.82
  6. Step 6: Final answer
    x = 266,993.65

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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.