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Finding the Fourth Proportional to 144,844.20, 217,266.30 and 70,021.80

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Solution

The fourth proportional to 144,844.20, 217,266.30 and 70,021.80 is: 105,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,844.20 : 217,266.30 = 70,021.80 : x
  2. Step 2: Convert to fraction form
    144,844.20/217,266.30 = 70,021.80/x
  3. Step 3: Cross multiply
    144,844.20x = 217,266.30 × 70,021.80
  4. Step 4: Simplify right side
    144,844.20x = 15,213,377,405.34
  5. Step 5: Solve for x
    x = 15,213,377,405.34/144,844.20
  6. Step 6: Final answer
    x = 105,032.70

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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.