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Finding the Fourth Proportional to 425,305.77, 638,083.40 and 125,794.23

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Solution

The fourth proportional to 425,305.77, 638,083.40 and 125,794.23 is: 188,728.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,305.77 : 638,083.40 = 125,794.23 : x
  2. Step 2: Convert to fraction form
    425,305.77/638,083.40 = 125,794.23/x
  3. Step 3: Cross multiply
    425,305.77x = 638,083.40 × 125,794.23
  4. Step 4: Simplify right side
    425,305.77x = 80,267,209,349.81
  5. Step 5: Solve for x
    x = 80,267,209,349.81/425,305.77
  6. Step 6: Final answer
    x = 188,728.24

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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.