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Finding the Fourth Proportional to 391,706.25, 540,719.97 and 264,554.07

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Solution

The fourth proportional to 391,706.25, 540,719.97 and 264,554.07 is: 365,196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,706.25 : 540,719.97 = 264,554.07 : x
  2. Step 2: Convert to fraction form
    391,706.25/540,719.97 = 264,554.07/x
  3. Step 3: Cross multiply
    391,706.25x = 540,719.97 × 264,554.07
  4. Step 4: Simplify right side
    391,706.25x = 143,049,668,793.78
  5. Step 5: Solve for x
    x = 143,049,668,793.78/391,706.25
  6. Step 6: Final answer
    x = 365,196.29

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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.