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Finding the Fourth Proportional to 219,226.80, 328,840.20 and 101,128.80

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Solution

The fourth proportional to 219,226.80, 328,840.20 and 101,128.80 is: 151,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,226.80 : 328,840.20 = 101,128.80 : x
  2. Step 2: Convert to fraction form
    219,226.80/328,840.20 = 101,128.80/x
  3. Step 3: Cross multiply
    219,226.80x = 328,840.20 × 101,128.80
  4. Step 4: Simplify right side
    219,226.80x = 33,255,214,817.76
  5. Step 5: Solve for x
    x = 33,255,214,817.76/219,226.80
  6. Step 6: Final answer
    x = 151,693.20

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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.