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Finding the Fourth Proportional to 230,555.85, 318,191.54 and 135,142.71

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Solution

The fourth proportional to 230,555.85, 318,191.54 and 135,142.71 is: 186,511.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,555.85 : 318,191.54 = 135,142.71 : x
  2. Step 2: Convert to fraction form
    230,555.85/318,191.54 = 135,142.71/x
  3. Step 3: Cross multiply
    230,555.85x = 318,191.54 × 135,142.71
  4. Step 4: Simplify right side
    230,555.85x = 43,001,266,338.96
  5. Step 5: Solve for x
    x = 43,001,266,338.96/230,555.85
  6. Step 6: Final answer
    x = 186,511.28

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1.5x scale

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.