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Finding the Fourth Proportional to 418,812.84, 628,225.92 and 103,269.84

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Solution

The fourth proportional to 418,812.84, 628,225.92 and 103,269.84 is: 154,906.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,812.84 : 628,225.92 = 103,269.84 : x
  2. Step 2: Convert to fraction form
    418,812.84/628,225.92 = 103,269.84/x
  3. Step 3: Cross multiply
    418,812.84x = 628,225.92 × 103,269.84
  4. Step 4: Simplify right side
    418,812.84x = 64,876,790,242.25
  5. Step 5: Solve for x
    x = 64,876,790,242.25/418,812.84
  6. Step 6: Final answer
    x = 154,906.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.