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Finding the Fourth Proportional to 216,734.22, 299,104.84 and 121,235.22

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Solution

The fourth proportional to 216,734.22, 299,104.84 and 121,235.22 is: 167,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,734.22 : 299,104.84 = 121,235.22 : x
  2. Step 2: Convert to fraction form
    216,734.22/299,104.84 = 121,235.22/x
  3. Step 3: Cross multiply
    216,734.22x = 299,104.84 × 121,235.22
  4. Step 4: Simplify right side
    216,734.22x = 36,262,041,080.46
  5. Step 5: Solve for x
    x = 36,262,041,080.46/216,734.22
  6. Step 6: Final answer
    x = 167,311.10

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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.