Home / 320,990.74-442,923.78-177,747.10

Finding the Fourth Proportional to 320,990.74, 442,923.78 and 177,747.10

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Solution

The fourth proportional to 320,990.74, 442,923.78 and 177,747.10 is: 245,266.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,990.74 : 442,923.78 = 177,747.10 : x
  2. Step 2: Convert to fraction form
    320,990.74/442,923.78 = 177,747.10/x
  3. Step 3: Cross multiply
    320,990.74x = 442,923.78 × 177,747.10
  4. Step 4: Simplify right side
    320,990.74x = 78,728,417,416.04
  5. Step 5: Solve for x
    x = 78,728,417,416.04/320,990.74
  6. Step 6: Final answer
    x = 245,266.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.