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Finding the Fourth Proportional to 239,711.10, 330,700.66 and 168,137.88

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Solution

The fourth proportional to 239,711.10, 330,700.66 and 168,137.88 is: 231,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,711.10 : 330,700.66 = 168,137.88 : x
  2. Step 2: Convert to fraction form
    239,711.10/330,700.66 = 168,137.88/x
  3. Step 3: Cross multiply
    239,711.10x = 330,700.66 × 168,137.88
  4. Step 4: Simplify right side
    239,711.10x = 55,603,307,887.00
  5. Step 5: Solve for x
    x = 55,603,307,887.00/239,711.10
  6. Step 6: Final answer
    x = 231,959.67

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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.