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Finding the Fourth Proportional to 199,615.37, 299,470.25 and 64,679.21

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Solution

The fourth proportional to 199,615.37, 299,470.25 and 64,679.21 is: 97,034.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,615.37 : 299,470.25 = 64,679.21 : x
  2. Step 2: Convert to fraction form
    199,615.37/299,470.25 = 64,679.21/x
  3. Step 3: Cross multiply
    199,615.37x = 299,470.25 × 64,679.21
  4. Step 4: Simplify right side
    199,615.37x = 19,369,499,188.50
  5. Step 5: Solve for x
    x = 19,369,499,188.50/199,615.37
  6. Step 6: Final answer
    x = 97,034.11

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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.