Home / 426,105.48-639,232.04-189,466.61

Finding the Fourth Proportional to 426,105.48, 639,232.04 and 189,466.61

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Solution

The fourth proportional to 426,105.48, 639,232.04 and 189,466.61 is: 284,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,105.48 : 639,232.04 = 189,466.61 : x
  2. Step 2: Convert to fraction form
    426,105.48/639,232.04 = 189,466.61/x
  3. Step 3: Cross multiply
    426,105.48x = 639,232.04 × 189,466.61
  4. Step 4: Simplify right side
    426,105.48x = 121,113,129,693.93
  5. Step 5: Solve for x
    x = 121,113,129,693.93/426,105.48
  6. Step 6: Final answer
    x = 284,232.74

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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.