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Finding the Fourth Proportional to 415,133.12, 622,787.16 and 134,628.50

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Solution

The fourth proportional to 415,133.12, 622,787.16 and 134,628.50 is: 201,971.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,133.12 : 622,787.16 = 134,628.50 : x
  2. Step 2: Convert to fraction form
    415,133.12/622,787.16 = 134,628.50/x
  3. Step 3: Cross multiply
    415,133.12x = 622,787.16 × 134,628.50
  4. Step 4: Simplify right side
    415,133.12x = 83,844,901,170.06
  5. Step 5: Solve for x
    x = 83,844,901,170.06/415,133.12
  6. Step 6: Final answer
    x = 201,971.12

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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.