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Finding the Fourth Proportional to 191,007.20, 285,927.60 and 149,016.80

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Solution

The fourth proportional to 191,007.20, 285,927.60 and 149,016.80 is: 223,070.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,007.20 : 285,927.60 = 149,016.80 : x
  2. Step 2: Convert to fraction form
    191,007.20/285,927.60 = 149,016.80/x
  3. Step 3: Cross multiply
    191,007.20x = 285,927.60 × 149,016.80
  4. Step 4: Simplify right side
    191,007.20x = 42,608,015,983.68
  5. Step 5: Solve for x
    x = 42,608,015,983.68/191,007.20
  6. Step 6: Final answer
    x = 223,070.21

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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.