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Finding the Fourth Proportional to 272,043.40, 407,663.34 and 131,634.76

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Solution

The fourth proportional to 272,043.40, 407,663.34 and 131,634.76 is: 197,257.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,043.40 : 407,663.34 = 131,634.76 : x
  2. Step 2: Convert to fraction form
    272,043.40/407,663.34 = 131,634.76/x
  3. Step 3: Cross multiply
    272,043.40x = 407,663.34 × 131,634.76
  4. Step 4: Simplify right side
    272,043.40x = 53,662,665,921.70
  5. Step 5: Solve for x
    x = 53,662,665,921.70/272,043.40
  6. Step 6: Final answer
    x = 197,257.74

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1.5x scale

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.