Home / 388,073.11-582,206.55-135,357.23

Finding the Fourth Proportional to 388,073.11, 582,206.55 and 135,357.23

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Solution

The fourth proportional to 388,073.11, 582,206.55 and 135,357.23 is: 203,069.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,073.11 : 582,206.55 = 135,357.23 : x
  2. Step 2: Convert to fraction form
    388,073.11/582,206.55 = 135,357.23/x
  3. Step 3: Cross multiply
    388,073.11x = 582,206.55 × 135,357.23
  4. Step 4: Simplify right side
    388,073.11x = 78,805,865,895.86
  5. Step 5: Solve for x
    x = 78,805,865,895.86/388,073.11
  6. Step 6: Final answer
    x = 203,069.64

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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.