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Finding the Fourth Proportional to 219,221.18, 328,857.69 and 69,468.38

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Solution

The fourth proportional to 219,221.18, 328,857.69 and 69,468.38 is: 104,210.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,221.18 : 328,857.69 = 69,468.38 : x
  2. Step 2: Convert to fraction form
    219,221.18/328,857.69 = 69,468.38/x
  3. Step 3: Cross multiply
    219,221.18x = 328,857.69 × 69,468.38
  4. Step 4: Simplify right side
    219,221.18x = 22,845,210,974.84
  5. Step 5: Solve for x
    x = 22,845,210,974.84/219,221.18
  6. Step 6: Final answer
    x = 104,210.78

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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.