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Finding the Fourth Proportional to 219,210.20, 328,815.30 and 166,722.20

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Solution

The fourth proportional to 219,210.20, 328,815.30 and 166,722.20 is: 250,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,210.20 : 328,815.30 = 166,722.20 : x
  2. Step 2: Convert to fraction form
    219,210.20/328,815.30 = 166,722.20/x
  3. Step 3: Cross multiply
    219,210.20x = 328,815.30 × 166,722.20
  4. Step 4: Simplify right side
    219,210.20x = 54,820,810,209.66
  5. Step 5: Solve for x
    x = 54,820,810,209.66/219,210.20
  6. Step 6: Final answer
    x = 250,083.30

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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.