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Finding the Fourth Proportional to 320,083.13, 479,964.71 and 106,776.78

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Solution

The fourth proportional to 320,083.13, 479,964.71 and 106,776.78 is: 160,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,083.13 : 479,964.71 = 106,776.78 : x
  2. Step 2: Convert to fraction form
    320,083.13/479,964.71 = 106,776.78/x
  3. Step 3: Cross multiply
    320,083.13x = 479,964.71 × 106,776.78
  4. Step 4: Simplify right side
    320,083.13x = 51,249,085,713.55
  5. Step 5: Solve for x
    x = 51,249,085,713.55/320,083.13
  6. Step 6: Final answer
    x = 160,111.80

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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.