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Finding the Fourth Proportional to 388,704.12, 536,228.40 and 227,460.27

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Solution

The fourth proportional to 388,704.12, 536,228.40 and 227,460.27 is: 313,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,704.12 : 536,228.40 = 227,460.27 : x
  2. Step 2: Convert to fraction form
    388,704.12/536,228.40 = 227,460.27/x
  3. Step 3: Cross multiply
    388,704.12x = 536,228.40 × 227,460.27
  4. Step 4: Simplify right side
    388,704.12x = 121,970,656,645.67
  5. Step 5: Solve for x
    x = 121,970,656,645.67/388,704.12
  6. Step 6: Final answer
    x = 313,787.92

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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.