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Finding the Fourth Proportional to 391,208.14, 540,136.14 and 264,061.90

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Solution

The fourth proportional to 391,208.14, 540,136.14 and 264,061.90 is: 364,586.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,208.14 : 540,136.14 = 264,061.90 : x
  2. Step 2: Convert to fraction form
    391,208.14/540,136.14 = 264,061.90/x
  3. Step 3: Cross multiply
    391,208.14x = 540,136.14 × 264,061.90
  4. Step 4: Simplify right side
    391,208.14x = 142,629,375,387.07
  5. Step 5: Solve for x
    x = 142,629,375,387.07/391,208.14
  6. Step 6: Final answer
    x = 364,586.93

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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.