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Finding the Fourth Proportional to 343,562.49, 474,008.83 and 198,349.21

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Solution

The fourth proportional to 343,562.49, 474,008.83 and 198,349.21 is: 273,659.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,562.49 : 474,008.83 = 198,349.21 : x
  2. Step 2: Convert to fraction form
    343,562.49/474,008.83 = 198,349.21/x
  3. Step 3: Cross multiply
    343,562.49x = 474,008.83 × 198,349.21
  4. Step 4: Simplify right side
    343,562.49x = 94,019,275,971.78
  5. Step 5: Solve for x
    x = 94,019,275,971.78/343,562.49
  6. Step 6: Final answer
    x = 273,659.90

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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.