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Finding the Fourth Proportional to 388,678.25, 536,510.22 and 227,585.09

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Solution

The fourth proportional to 388,678.25, 536,510.22 and 227,585.09 is: 314,146.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,678.25 : 536,510.22 = 227,585.09 : x
  2. Step 2: Convert to fraction form
    388,678.25/536,510.22 = 227,585.09/x
  3. Step 3: Cross multiply
    388,678.25x = 536,510.22 × 227,585.09
  4. Step 4: Simplify right side
    388,678.25x = 122,101,726,704.62
  5. Step 5: Solve for x
    x = 122,101,726,704.62/388,678.25
  6. Step 6: Final answer
    x = 314,146.02

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1.5x scale

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.