Home / 388,156.83-582,289.91-135,400.46

Finding the Fourth Proportional to 388,156.83, 582,289.91 and 135,400.46

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Solution

The fourth proportional to 388,156.83, 582,289.91 and 135,400.46 is: 203,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,156.83 : 582,289.91 = 135,400.46 : x
  2. Step 2: Convert to fraction form
    388,156.83/582,289.91 = 135,400.46/x
  3. Step 3: Cross multiply
    388,156.83x = 582,289.91 × 135,400.46
  4. Step 4: Simplify right side
    388,156.83x = 78,842,318,078.91
  5. Step 5: Solve for x
    x = 78,842,318,078.91/388,156.83
  6. Step 6: Final answer
    x = 203,119.75

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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.