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Finding the Fourth Proportional to 219,218.68, 328,853.94 and 69,465.88

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Solution

The fourth proportional to 219,218.68, 328,853.94 and 69,465.88 is: 104,207.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,218.68 : 328,853.94 = 69,465.88 : x
  2. Step 2: Convert to fraction form
    219,218.68/328,853.94 = 69,465.88/x
  3. Step 3: Cross multiply
    219,218.68x = 328,853.94 × 69,465.88
  4. Step 4: Simplify right side
    219,218.68x = 22,844,128,333.57
  5. Step 5: Solve for x
    x = 22,844,128,333.57/219,218.68
  6. Step 6: Final answer
    x = 104,207.03

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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.