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Finding the Fourth Proportional to 199,571.98, 299,199 and 115,236.40

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Solution

The fourth proportional to 199,571.98, 299,199 and 115,236.40 is: 172,762.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,571.98 : 299,199 = 115,236.40 : x
  2. Step 2: Convert to fraction form
    199,571.98/299,199 = 115,236.40/x
  3. Step 3: Cross multiply
    199,571.98x = 299,199 × 115,236.40
  4. Step 4: Simplify right side
    199,571.98x = 34,478,615,643.60
  5. Step 5: Solve for x
    x = 34,478,615,643.60/199,571.98
  6. Step 6: Final answer
    x = 172,762.81

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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.