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Finding the Fourth Proportional to 425,776.96, 638,480.04 and 122,104.16

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Solution

The fourth proportional to 425,776.96, 638,480.04 and 122,104.16 is: 183,103.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,776.96 : 638,480.04 = 122,104.16 : x
  2. Step 2: Convert to fraction form
    425,776.96/638,480.04 = 122,104.16/x
  3. Step 3: Cross multiply
    425,776.96x = 638,480.04 × 122,104.16
  4. Step 4: Simplify right side
    425,776.96x = 77,961,068,960.97
  5. Step 5: Solve for x
    x = 77,961,068,960.97/425,776.96
  6. Step 6: Final answer
    x = 183,103.07

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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.