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Finding the Fourth Proportional to 454,593.75, 681,917.97 and 139,053.39

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Solution

The fourth proportional to 454,593.75, 681,917.97 and 139,053.39 is: 208,588.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,593.75 : 681,917.97 = 139,053.39 : x
  2. Step 2: Convert to fraction form
    454,593.75/681,917.97 = 139,053.39/x
  3. Step 3: Cross multiply
    454,593.75x = 681,917.97 × 139,053.39
  4. Step 4: Simplify right side
    454,593.75x = 94,823,005,430.42
  5. Step 5: Solve for x
    x = 94,823,005,430.42/454,593.75
  6. Step 6: Final answer
    x = 208,588.45

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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.