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Finding the Fourth Proportional to 219,433.76, 328,901.72 and 100,860.08

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Solution

The fourth proportional to 219,433.76, 328,901.72 and 100,860.08 is: 151,175.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,433.76 : 328,901.72 = 100,860.08 : x
  2. Step 2: Convert to fraction form
    219,433.76/328,901.72 = 100,860.08/x
  3. Step 3: Cross multiply
    219,433.76x = 328,901.72 × 100,860.08
  4. Step 4: Simplify right side
    219,433.76x = 33,173,053,791.34
  5. Step 5: Solve for x
    x = 33,173,053,791.34/219,433.76
  6. Step 6: Final answer
    x = 151,175.71

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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.