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Finding the Fourth Proportional to 422,915.45, 634,215.08 and 170,110.51

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Solution

The fourth proportional to 422,915.45, 634,215.08 and 170,110.51 is: 255,102.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,915.45 : 634,215.08 = 170,110.51 : x
  2. Step 2: Convert to fraction form
    422,915.45/634,215.08 = 170,110.51/x
  3. Step 3: Cross multiply
    422,915.45x = 634,215.08 × 170,110.51
  4. Step 4: Simplify right side
    422,915.45x = 107,886,650,708.49
  5. Step 5: Solve for x
    x = 107,886,650,708.49/422,915.45
  6. Step 6: Final answer
    x = 255,102.17

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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.