Home / 398,849.72-550,413.12-229,116.68

Finding the Fourth Proportional to 398,849.72, 550,413.12 and 229,116.68

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Solution

The fourth proportional to 398,849.72, 550,413.12 and 229,116.68 is: 316,181.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,849.72 : 550,413.12 = 229,116.68 : x
  2. Step 2: Convert to fraction form
    398,849.72/550,413.12 = 229,116.68/x
  3. Step 3: Cross multiply
    398,849.72x = 550,413.12 × 229,116.68
  4. Step 4: Simplify right side
    398,849.72x = 126,108,826,682.84
  5. Step 5: Solve for x
    x = 126,108,826,682.84/398,849.72
  6. Step 6: Final answer
    x = 316,181.31

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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.