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Finding the Fourth Proportional to 239,633.52, 359,496.36 and 91,878

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Solution

The fourth proportional to 239,633.52, 359,496.36 and 91,878 is: 137,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,633.52 : 359,496.36 = 91,878 : x
  2. Step 2: Convert to fraction form
    239,633.52/359,496.36 = 91,878/x
  3. Step 3: Cross multiply
    239,633.52x = 359,496.36 × 91,878
  4. Step 4: Simplify right side
    239,633.52x = 33,029,806,564.08
  5. Step 5: Solve for x
    x = 33,029,806,564.08/239,633.52
  6. Step 6: Final answer
    x = 137,834.67

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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.