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Finding the Fourth Proportional to 230,911.43, 318,877.84 and 218,331.39

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Solution

The fourth proportional to 230,911.43, 318,877.84 and 218,331.39 is: 301,505.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,911.43 : 318,877.84 = 218,331.39 : x
  2. Step 2: Convert to fraction form
    230,911.43/318,877.84 = 218,331.39/x
  3. Step 3: Cross multiply
    230,911.43x = 318,877.84 × 218,331.39
  4. Step 4: Simplify right side
    230,911.43x = 69,621,041,501.57
  5. Step 5: Solve for x
    x = 69,621,041,501.57/230,911.43
  6. Step 6: Final answer
    x = 301,505.40

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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.