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Finding the Fourth Proportional to 218,980.30, 328,519.05 and 100,623.10

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Solution

The fourth proportional to 218,980.30, 328,519.05 and 100,623.10 is: 150,956.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,980.30 : 328,519.05 = 100,623.10 : x
  2. Step 2: Convert to fraction form
    218,980.30/328,519.05 = 100,623.10/x
  3. Step 3: Cross multiply
    218,980.30x = 328,519.05 × 100,623.10
  4. Step 4: Simplify right side
    218,980.30x = 33,056,605,220.06
  5. Step 5: Solve for x
    x = 33,056,605,220.06/218,980.30
  6. Step 6: Final answer
    x = 150,956.98

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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.