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Finding the Fourth Proportional to 219,385.20, 328,981.80 and 101,017.20

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Solution

The fourth proportional to 219,385.20, 328,981.80 and 101,017.20 is: 151,481.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,385.20 : 328,981.80 = 101,017.20 : x
  2. Step 2: Convert to fraction form
    219,385.20/328,981.80 = 101,017.20/x
  3. Step 3: Cross multiply
    219,385.20x = 328,981.80 × 101,017.20
  4. Step 4: Simplify right side
    219,385.20x = 33,232,820,286.96
  5. Step 5: Solve for x
    x = 33,232,820,286.96/219,385.20
  6. Step 6: Final answer
    x = 151,481.60

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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.