Home / 398,844.96-550,385.36-247,939.36

Finding the Fourth Proportional to 398,844.96, 550,385.36 and 247,939.36

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Solution

The fourth proportional to 398,844.96, 550,385.36 and 247,939.36 is: 342,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,844.96 : 550,385.36 = 247,939.36 : x
  2. Step 2: Convert to fraction form
    398,844.96/550,385.36 = 247,939.36/x
  3. Step 3: Cross multiply
    398,844.96x = 550,385.36 × 247,939.36
  4. Step 4: Simplify right side
    398,844.96x = 136,462,193,911.77
  5. Step 5: Solve for x
    x = 136,462,193,911.77/398,844.96
  6. Step 6: Final answer
    x = 342,143.46

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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.