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Finding the Fourth Proportional to 272,720.84, 409,251.63 and 104,255.42

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Solution

The fourth proportional to 272,720.84, 409,251.63 and 104,255.42 is: 156,448.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,720.84 : 409,251.63 = 104,255.42 : x
  2. Step 2: Convert to fraction form
    272,720.84/409,251.63 = 104,255.42/x
  3. Step 3: Cross multiply
    272,720.84x = 409,251.63 × 104,255.42
  4. Step 4: Simplify right side
    272,720.84x = 42,666,700,571.33
  5. Step 5: Solve for x
    x = 42,666,700,571.33/272,720.84
  6. Step 6: Final answer
    x = 156,448.26

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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.