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Finding the Fourth Proportional to 219,720.88, 303,222.98 and 124,221.88

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Solution

The fourth proportional to 219,720.88, 303,222.98 and 124,221.88 is: 171,430.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,720.88 : 303,222.98 = 124,221.88 : x
  2. Step 2: Convert to fraction form
    219,720.88/303,222.98 = 124,221.88/x
  3. Step 3: Cross multiply
    219,720.88x = 303,222.98 × 124,221.88
  4. Step 4: Simplify right side
    219,720.88x = 37,666,928,634.80
  5. Step 5: Solve for x
    x = 37,666,928,634.80/219,720.88
  6. Step 6: Final answer
    x = 171,430.81

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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.