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Finding the Fourth Proportional to 216,661.16, 298,991.37 and 121,168.23

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Solution

The fourth proportional to 216,661.16, 298,991.37 and 121,168.23 is: 167,211.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,661.16 : 298,991.37 = 121,168.23 : x
  2. Step 2: Convert to fraction form
    216,661.16/298,991.37 = 121,168.23/x
  3. Step 3: Cross multiply
    216,661.16x = 298,991.37 × 121,168.23
  4. Step 4: Simplify right side
    216,661.16x = 36,228,255,088.18
  5. Step 5: Solve for x
    x = 36,228,255,088.18/216,661.16
  6. Step 6: Final answer
    x = 167,211.58

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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.