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Finding the Fourth Proportional to 261,552.84, 391,834.08 and 154,616.64

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Solution

The fourth proportional to 261,552.84, 391,834.08 and 154,616.64 is: 231,632.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,552.84 : 391,834.08 = 154,616.64 : x
  2. Step 2: Convert to fraction form
    261,552.84/391,834.08 = 154,616.64/x
  3. Step 3: Cross multiply
    261,552.84x = 391,834.08 × 154,616.64
  4. Step 4: Simplify right side
    261,552.84x = 60,584,068,887.09
  5. Step 5: Solve for x
    x = 60,584,068,887.09/261,552.84
  6. Step 6: Final answer
    x = 231,632.23

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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.