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Finding the Fourth Proportional to 219,709.91, 303,199.79 and 124,215.77

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Solution

The fourth proportional to 219,709.91, 303,199.79 and 124,215.77 is: 171,417.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,709.91 : 303,199.79 = 124,215.77 : x
  2. Step 2: Convert to fraction form
    219,709.91/303,199.79 = 124,215.77/x
  3. Step 3: Cross multiply
    219,709.91x = 303,199.79 × 124,215.77
  4. Step 4: Simplify right side
    219,709.91x = 37,662,193,241.61
  5. Step 5: Solve for x
    x = 37,662,193,241.61/219,709.91
  6. Step 6: Final answer
    x = 171,417.82

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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.