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Finding the Fourth Proportional to 316,988.86, 437,489.48 and 196,169.06

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Solution

The fourth proportional to 316,988.86, 437,489.48 and 196,169.06 is: 270,741.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,988.86 : 437,489.48 = 196,169.06 : x
  2. Step 2: Convert to fraction form
    316,988.86/437,489.48 = 196,169.06/x
  3. Step 3: Cross multiply
    316,988.86x = 437,489.48 × 196,169.06
  4. Step 4: Simplify right side
    316,988.86x = 85,821,899,995.05
  5. Step 5: Solve for x
    x = 85,821,899,995.05/316,988.86
  6. Step 6: Final answer
    x = 270,741.06

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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.