Home / 398,619.47-550,094.70-217,331.54

Finding the Fourth Proportional to 398,619.47, 550,094.70 and 217,331.54

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Solution

The fourth proportional to 398,619.47, 550,094.70 and 217,331.54 is: 299,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,619.47 : 550,094.70 = 217,331.54 : x
  2. Step 2: Convert to fraction form
    398,619.47/550,094.70 = 217,331.54/x
  3. Step 3: Cross multiply
    398,619.47x = 550,094.70 × 217,331.54
  4. Step 4: Simplify right side
    398,619.47x = 119,552,928,296.84
  5. Step 5: Solve for x
    x = 119,552,928,296.84/398,619.47
  6. Step 6: Final answer
    x = 299,917.43

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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.