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Finding the Fourth Proportional to 219,193.20, 328,692.60 and 100,900.80

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Solution

The fourth proportional to 219,193.20, 328,692.60 and 100,900.80 is: 151,306.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,193.20 : 328,692.60 = 100,900.80 : x
  2. Step 2: Convert to fraction form
    219,193.20/328,692.60 = 100,900.80/x
  3. Step 3: Cross multiply
    219,193.20x = 328,692.60 × 100,900.80
  4. Step 4: Simplify right side
    219,193.20x = 33,165,346,294.08
  5. Step 5: Solve for x
    x = 33,165,346,294.08/219,193.20
  6. Step 6: Final answer
    x = 151,306.46

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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.