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Finding the Fourth Proportional to 415,169.12, 622,841.16 and 134,664.50

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Solution

The fourth proportional to 415,169.12, 622,841.16 and 134,664.50 is: 202,025.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,169.12 : 622,841.16 = 134,664.50 : x
  2. Step 2: Convert to fraction form
    415,169.12/622,841.16 = 134,664.50/x
  3. Step 3: Cross multiply
    415,169.12x = 622,841.16 × 134,664.50
  4. Step 4: Simplify right side
    415,169.12x = 83,874,593,390.82
  5. Step 5: Solve for x
    x = 83,874,593,390.82/415,169.12
  6. Step 6: Final answer
    x = 202,025.13

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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.