Home / 388,091.12-582,210.68-135,443.77

Finding the Fourth Proportional to 388,091.12, 582,210.68 and 135,443.77

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Solution

The fourth proportional to 388,091.12, 582,210.68 and 135,443.77 is: 203,191.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,091.12 : 582,210.68 = 135,443.77 : x
  2. Step 2: Convert to fraction form
    388,091.12/582,210.68 = 135,443.77/x
  3. Step 3: Cross multiply
    388,091.12x = 582,210.68 × 135,443.77
  4. Step 4: Simplify right side
    388,091.12x = 78,856,807,300.72
  5. Step 5: Solve for x
    x = 78,856,807,300.72/388,091.12
  6. Step 6: Final answer
    x = 203,191.48

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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.