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Finding the Fourth Proportional to 217,417.92, 300,039.78 and 131,364.90

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Solution

The fourth proportional to 217,417.92, 300,039.78 and 131,364.90 is: 181,285.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,417.92 : 300,039.78 = 131,364.90 : x
  2. Step 2: Convert to fraction form
    217,417.92/300,039.78 = 131,364.90/x
  3. Step 3: Cross multiply
    217,417.92x = 300,039.78 × 131,364.90
  4. Step 4: Simplify right side
    217,417.92x = 39,414,695,695.72
  5. Step 5: Solve for x
    x = 39,414,695,695.72/217,417.92
  6. Step 6: Final answer
    x = 181,285.41

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1.5x scale

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.