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Finding the Fourth Proportional to 538,600.50, 807,928.42 and 139,244.73

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Solution

The fourth proportional to 538,600.50, 807,928.42 and 139,244.73 is: 208,874.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,600.50 : 807,928.42 = 139,244.73 : x
  2. Step 2: Convert to fraction form
    538,600.50/807,928.42 = 139,244.73/x
  3. Step 3: Cross multiply
    538,600.50x = 807,928.42 × 139,244.73
  4. Step 4: Simplify right side
    538,600.50x = 112,499,774,702.23
  5. Step 5: Solve for x
    x = 112,499,774,702.23/538,600.50
  6. Step 6: Final answer
    x = 208,874.25

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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.