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Finding the Fourth Proportional to 239,909.26, 359,914.64 and 90,150.86

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Solution

The fourth proportional to 239,909.26, 359,914.64 and 90,150.86 is: 135,245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,909.26 : 359,914.64 = 90,150.86 : x
  2. Step 2: Convert to fraction form
    239,909.26/359,914.64 = 90,150.86/x
  3. Step 3: Cross multiply
    239,909.26x = 359,914.64 × 90,150.86
  4. Step 4: Simplify right side
    239,909.26x = 32,446,614,322.59
  5. Step 5: Solve for x
    x = 32,446,614,322.59/239,909.26
  6. Step 6: Final answer
    x = 135,245.36

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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.