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Finding the Fourth Proportional to 219,221.52, 328,843.62 and 69,477.72

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Solution

The fourth proportional to 219,221.52, 328,843.62 and 69,477.72 is: 104,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,221.52 : 328,843.62 = 69,477.72 : x
  2. Step 2: Convert to fraction form
    219,221.52/328,843.62 = 69,477.72/x
  3. Step 3: Cross multiply
    219,221.52x = 328,843.62 × 69,477.72
  4. Step 4: Simplify right side
    219,221.52x = 22,847,304,954.15
  5. Step 5: Solve for x
    x = 22,847,304,954.15/219,221.52
  6. Step 6: Final answer
    x = 104,220.17

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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.