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Finding the Fourth Proportional to 216,662.65, 298,994.23 and 121,169.35

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Solution

The fourth proportional to 216,662.65, 298,994.23 and 121,169.35 is: 167,213.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,662.65 : 298,994.23 = 121,169.35 : x
  2. Step 2: Convert to fraction form
    216,662.65/298,994.23 = 121,169.35/x
  3. Step 3: Cross multiply
    216,662.65x = 298,994.23 × 121,169.35
  4. Step 4: Simplify right side
    216,662.65x = 36,228,936,502.85
  5. Step 5: Solve for x
    x = 36,228,936,502.85/216,662.65
  6. Step 6: Final answer
    x = 167,213.58

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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.