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Finding the Fourth Proportional to 272,016.60, 407,909.70 and 131,818.20

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Solution

The fourth proportional to 272,016.60, 407,909.70 and 131,818.20 is: 197,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,016.60 : 407,909.70 = 131,818.20 : x
  2. Step 2: Convert to fraction form
    272,016.60/407,909.70 = 131,818.20/x
  3. Step 3: Cross multiply
    272,016.60x = 407,909.70 × 131,818.20
  4. Step 4: Simplify right side
    272,016.60x = 53,769,922,416.54
  5. Step 5: Solve for x
    x = 53,769,922,416.54/272,016.60
  6. Step 6: Final answer
    x = 197,671.47

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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.