Home / 388,072.11-582,205.05-135,356.23

Finding the Fourth Proportional to 388,072.11, 582,205.05 and 135,356.23

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Solution

The fourth proportional to 388,072.11, 582,205.05 and 135,356.23 is: 203,068.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,072.11 : 582,205.05 = 135,356.23 : x
  2. Step 2: Convert to fraction form
    388,072.11/582,205.05 = 135,356.23/x
  3. Step 3: Cross multiply
    388,072.11x = 582,205.05 × 135,356.23
  4. Step 4: Simplify right side
    388,072.11x = 78,805,080,654.96
  5. Step 5: Solve for x
    x = 78,805,080,654.96/388,072.11
  6. Step 6: Final answer
    x = 203,068.14

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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.