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Finding the Fourth Proportional to 216,970.85, 299,416.43 and 121,480.97

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Solution

The fourth proportional to 216,970.85, 299,416.43 and 121,480.97 is: 167,641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,970.85 : 299,416.43 = 121,480.97 : x
  2. Step 2: Convert to fraction form
    216,970.85/299,416.43 = 121,480.97/x
  3. Step 3: Cross multiply
    216,970.85x = 299,416.43 × 121,480.97
  4. Step 4: Simplify right side
    216,970.85x = 36,373,397,156.96
  5. Step 5: Solve for x
    x = 36,373,397,156.96/216,970.85
  6. Step 6: Final answer
    x = 167,641.86

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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.