Home / 293,784.91-405,547.19-198,420.78

Finding the Fourth Proportional to 293,784.91, 405,547.19 and 198,420.78

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Solution

The fourth proportional to 293,784.91, 405,547.19 and 198,420.78 is: 273,904.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,784.91 : 405,547.19 = 198,420.78 : x
  2. Step 2: Convert to fraction form
    293,784.91/405,547.19 = 198,420.78/x
  3. Step 3: Cross multiply
    293,784.91x = 405,547.19 × 198,420.78
  4. Step 4: Simplify right side
    293,784.91x = 80,468,989,766.61
  5. Step 5: Solve for x
    x = 80,468,989,766.61/293,784.91
  6. Step 6: Final answer
    x = 273,904.43

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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.