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Finding the Fourth Proportional to 272,015.60, 407,908.20 and 131,817.20

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Solution

The fourth proportional to 272,015.60, 407,908.20 and 131,817.20 is: 197,669.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,015.60 : 407,908.20 = 131,817.20 : x
  2. Step 2: Convert to fraction form
    272,015.60/407,908.20 = 131,817.20/x
  3. Step 3: Cross multiply
    272,015.60x = 407,908.20 × 131,817.20
  4. Step 4: Simplify right side
    272,015.60x = 53,769,316,781.04
  5. Step 5: Solve for x
    x = 53,769,316,781.04/272,015.60
  6. Step 6: Final answer
    x = 197,669.97

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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.