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Finding the Fourth Proportional to 219,080.55, 328,661.42 and 69,358.53

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Solution

The fourth proportional to 219,080.55, 328,661.42 and 69,358.53 is: 104,050.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,080.55 : 328,661.42 = 69,358.53 : x
  2. Step 2: Convert to fraction form
    219,080.55/328,661.42 = 69,358.53/x
  3. Step 3: Cross multiply
    219,080.55x = 328,661.42 × 69,358.53
  4. Step 4: Simplify right side
    219,080.55x = 22,795,472,958.91
  5. Step 5: Solve for x
    x = 22,795,472,958.91/219,080.55
  6. Step 6: Final answer
    x = 104,050.65

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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.