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Finding the Fourth Proportional to 408,988.87, 564,258.55 and 236,812.84

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Solution

The fourth proportional to 408,988.87, 564,258.55 and 236,812.84 is: 326,717.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,988.87 : 564,258.55 = 236,812.84 : x
  2. Step 2: Convert to fraction form
    408,988.87/564,258.55 = 236,812.84/x
  3. Step 3: Cross multiply
    408,988.87x = 564,258.55 × 236,812.84
  4. Step 4: Simplify right side
    408,988.87x = 133,623,669,719.78
  5. Step 5: Solve for x
    x = 133,623,669,719.78/408,988.87
  6. Step 6: Final answer
    x = 326,717.13

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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.