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Finding the Fourth Proportional to 374,840.75, 517,346.82 and 221,963.81

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Solution

The fourth proportional to 374,840.75, 517,346.82 and 221,963.81 is: 306,349.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,840.75 : 517,346.82 = 221,963.81 : x
  2. Step 2: Convert to fraction form
    374,840.75/517,346.82 = 221,963.81/x
  3. Step 3: Cross multiply
    374,840.75x = 517,346.82 × 221,963.81
  4. Step 4: Simplify right side
    374,840.75x = 114,832,268,671.85
  5. Step 5: Solve for x
    x = 114,832,268,671.85/374,840.75
  6. Step 6: Final answer
    x = 306,349.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.