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Finding the Fourth Proportional to 217,752.45, 300,490.61 and 122,263.17

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Solution

The fourth proportional to 217,752.45, 300,490.61 and 122,263.17 is: 168,718.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,752.45 : 300,490.61 = 122,263.17 : x
  2. Step 2: Convert to fraction form
    217,752.45/300,490.61 = 122,263.17/x
  3. Step 3: Cross multiply
    217,752.45x = 300,490.61 × 122,263.17
  4. Step 4: Simplify right side
    217,752.45x = 36,738,933,922.52
  5. Step 5: Solve for x
    x = 36,738,933,922.52/217,752.45
  6. Step 6: Final answer
    x = 168,718.81

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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.