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Finding the Fourth Proportional to 239,559, 330,721.02 and 144,087

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Solution

The fourth proportional to 239,559, 330,721.02 and 144,087 is: 198,918.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,559 : 330,721.02 = 144,087 : x
  2. Step 2: Convert to fraction form
    239,559/330,721.02 = 144,087/x
  3. Step 3: Cross multiply
    239,559x = 330,721.02 × 144,087
  4. Step 4: Simplify right side
    239,559x = 47,652,599,608.74
  5. Step 5: Solve for x
    x = 47,652,599,608.74/239,559
  6. Step 6: Final answer
    x = 198,918.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.