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Finding the Fourth Proportional to 374,067.91, 561,180.77 and 121,328.77

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Solution

The fourth proportional to 374,067.91, 561,180.77 and 121,328.77 is: 182,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,067.91 : 561,180.77 = 121,328.77 : x
  2. Step 2: Convert to fraction form
    374,067.91/561,180.77 = 121,328.77/x
  3. Step 3: Cross multiply
    374,067.91x = 561,180.77 × 121,328.77
  4. Step 4: Simplify right side
    374,067.91x = 68,087,371,728.12
  5. Step 5: Solve for x
    x = 68,087,371,728.12/374,067.91
  6. Step 6: Final answer
    x = 182,018.75

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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.