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Finding the Fourth Proportional to 216,165.39, 324,445.84 and 109,622.89

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Solution

The fourth proportional to 216,165.39, 324,445.84 and 109,622.89 is: 164,534.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,165.39 : 324,445.84 = 109,622.89 : x
  2. Step 2: Convert to fraction form
    216,165.39/324,445.84 = 109,622.89/x
  3. Step 3: Cross multiply
    216,165.39x = 324,445.84 × 109,622.89
  4. Step 4: Simplify right side
    216,165.39x = 35,566,688,935.77
  5. Step 5: Solve for x
    x = 35,566,688,935.77/216,165.39
  6. Step 6: Final answer
    x = 164,534.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.