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Finding the Fourth Proportional to 219,259.20, 328,791.60 and 100,869.60

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Solution

The fourth proportional to 219,259.20, 328,791.60 and 100,869.60 is: 151,259.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,259.20 : 328,791.60 = 100,869.60 : x
  2. Step 2: Convert to fraction form
    219,259.20/328,791.60 = 100,869.60/x
  3. Step 3: Cross multiply
    219,259.20x = 328,791.60 × 100,869.60
  4. Step 4: Simplify right side
    219,259.20x = 33,165,077,175.36
  5. Step 5: Solve for x
    x = 33,165,077,175.36/219,259.20
  6. Step 6: Final answer
    x = 151,259.68

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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.