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Finding the Fourth Proportional to 355,703.32, 533,765.14 and 131,221.39

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Solution

The fourth proportional to 355,703.32, 533,765.14 and 131,221.39 is: 196,909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,703.32 : 533,765.14 = 131,221.39 : x
  2. Step 2: Convert to fraction form
    355,703.32/533,765.14 = 131,221.39/x
  3. Step 3: Cross multiply
    355,703.32x = 533,765.14 × 131,221.39
  4. Step 4: Simplify right side
    355,703.32x = 70,041,405,182.02
  5. Step 5: Solve for x
    x = 70,041,405,182.02/355,703.32
  6. Step 6: Final answer
    x = 196,909.62

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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.