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Finding the Fourth Proportional to 219,486.22, 328,975.19 and 100,908.70

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Solution

The fourth proportional to 219,486.22, 328,975.19 and 100,908.70 is: 151,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,486.22 : 328,975.19 = 100,908.70 : x
  2. Step 2: Convert to fraction form
    219,486.22/328,975.19 = 100,908.70/x
  3. Step 3: Cross multiply
    219,486.22x = 328,975.19 × 100,908.70
  4. Step 4: Simplify right side
    219,486.22x = 33,196,457,428.17
  5. Step 5: Solve for x
    x = 33,196,457,428.17/219,486.22
  6. Step 6: Final answer
    x = 151,246.20

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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.