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Finding the Fourth Proportional to 217,085.94, 299,584.44 and 121,590.54

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Solution

The fourth proportional to 217,085.94, 299,584.44 and 121,590.54 is: 167,798.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,085.94 : 299,584.44 = 121,590.54 : x
  2. Step 2: Convert to fraction form
    217,085.94/299,584.44 = 121,590.54/x
  3. Step 3: Cross multiply
    217,085.94x = 299,584.44 × 121,590.54
  4. Step 4: Simplify right side
    217,085.94x = 36,426,633,835.20
  5. Step 5: Solve for x
    x = 36,426,633,835.20/217,085.94
  6. Step 6: Final answer
    x = 167,798.22

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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.