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Finding the Fourth Proportional to 219,608.82, 303,092.64 and 139,043.85

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Solution

The fourth proportional to 219,608.82, 303,092.64 and 139,043.85 is: 191,901.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,608.82 : 303,092.64 = 139,043.85 : x
  2. Step 2: Convert to fraction form
    219,608.82/303,092.64 = 139,043.85/x
  3. Step 3: Cross multiply
    219,608.82x = 303,092.64 × 139,043.85
  4. Step 4: Simplify right side
    219,608.82x = 42,143,167,572.26
  5. Step 5: Solve for x
    x = 42,143,167,572.26/219,608.82
  6. Step 6: Final answer
    x = 191,901.07

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1.5x scale

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.