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Finding the Fourth Proportional to 219,833.88, 303,353.55 and 129,193.26

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Solution

The fourth proportional to 219,833.88, 303,353.55 and 129,193.26 is: 178,276.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,833.88 : 303,353.55 = 129,193.26 : x
  2. Step 2: Convert to fraction form
    219,833.88/303,353.55 = 129,193.26/x
  3. Step 3: Cross multiply
    219,833.88x = 303,353.55 × 129,193.26
  4. Step 4: Simplify right side
    219,833.88x = 39,191,234,057.07
  5. Step 5: Solve for x
    x = 39,191,234,057.07/219,833.88
  6. Step 6: Final answer
    x = 178,276.59

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1.5x scale

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.