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Finding the Fourth Proportional to 352,123, 528,051.80 and 127,427.86

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Solution

The fourth proportional to 352,123, 528,051.80 and 127,427.86 is: 191,093.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,123 : 528,051.80 = 127,427.86 : x
  2. Step 2: Convert to fraction form
    352,123/528,051.80 = 127,427.86/x
  3. Step 3: Cross multiply
    352,123x = 528,051.80 × 127,427.86
  4. Step 4: Simplify right side
    352,123x = 67,288,510,843.15
  5. Step 5: Solve for x
    x = 67,288,510,843.15/352,123
  6. Step 6: Final answer
    x = 191,093.77

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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.