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Finding the Fourth Proportional to 401,099.70, 553,447.41 and 228,939.06

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Solution

The fourth proportional to 401,099.70, 553,447.41 and 228,939.06 is: 315,895.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,099.70 : 553,447.41 = 228,939.06 : x
  2. Step 2: Convert to fraction form
    401,099.70/553,447.41 = 228,939.06/x
  3. Step 3: Cross multiply
    401,099.70x = 553,447.41 × 228,939.06
  4. Step 4: Simplify right side
    401,099.70x = 126,705,729,804.84
  5. Step 5: Solve for x
    x = 126,705,729,804.84/401,099.70
  6. Step 6: Final answer
    x = 315,895.85

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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.