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Finding the Fourth Proportional to 219,211.33, 328,813.10 and 69,447.72

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Solution

The fourth proportional to 219,211.33, 328,813.10 and 69,447.72 is: 104,170.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,211.33 : 328,813.10 = 69,447.72 : x
  2. Step 2: Convert to fraction form
    219,211.33/328,813.10 = 69,447.72/x
  3. Step 3: Cross multiply
    219,211.33x = 328,813.10 × 69,447.72
  4. Step 4: Simplify right side
    219,211.33x = 22,835,320,986.94
  5. Step 5: Solve for x
    x = 22,835,320,986.94/219,211.33
  6. Step 6: Final answer
    x = 104,170.35

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1.5x scale

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.