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Finding the Fourth Proportional to 247,991.70, 342,231.93 and 134,816.88

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Solution

The fourth proportional to 247,991.70, 342,231.93 and 134,816.88 is: 186,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,991.70 : 342,231.93 = 134,816.88 : x
  2. Step 2: Convert to fraction form
    247,991.70/342,231.93 = 134,816.88/x
  3. Step 3: Cross multiply
    247,991.70x = 342,231.93 × 134,816.88
  4. Step 4: Simplify right side
    247,991.70x = 46,138,641,038.98
  5. Step 5: Solve for x
    x = 46,138,641,038.98/247,991.70
  6. Step 6: Final answer
    x = 186,049.13

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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.