Home / 218,813.12-328,231.68-69,057.92

Finding the Fourth Proportional to 218,813.12, 328,231.68 and 69,057.92

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Solution

The fourth proportional to 218,813.12, 328,231.68 and 69,057.92 is: 103,590.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,813.12 : 328,231.68 = 69,057.92 : x
  2. Step 2: Convert to fraction form
    218,813.12/328,231.68 = 69,057.92/x
  3. Step 3: Cross multiply
    218,813.12x = 328,231.68 × 69,057.92
  4. Step 4: Simplify right side
    218,813.12x = 22,666,997,098.91
  5. Step 5: Solve for x
    x = 22,666,997,098.91/218,813.12
  6. Step 6: Final answer
    x = 103,590.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.