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Finding the Fourth Proportional to 240,638.78, 360,836.67 and 140,828.96

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Solution

The fourth proportional to 240,638.78, 360,836.67 and 140,828.96 is: 211,172.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,638.78 : 360,836.67 = 140,828.96 : x
  2. Step 2: Convert to fraction form
    240,638.78/360,836.67 = 140,828.96/x
  3. Step 3: Cross multiply
    240,638.78x = 360,836.67 × 140,828.96
  4. Step 4: Simplify right side
    240,638.78x = 50,816,254,396.16
  5. Step 5: Solve for x
    x = 50,816,254,396.16/240,638.78
  6. Step 6: Final answer
    x = 211,172.34

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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.