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Finding the Fourth Proportional to 219,409.41, 302,790.96 and 123,930.30

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Solution

The fourth proportional to 219,409.41, 302,790.96 and 123,930.30 is: 171,027.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,409.41 : 302,790.96 = 123,930.30 : x
  2. Step 2: Convert to fraction form
    219,409.41/302,790.96 = 123,930.30/x
  3. Step 3: Cross multiply
    219,409.41x = 302,790.96 × 123,930.30
  4. Step 4: Simplify right side
    219,409.41x = 37,524,974,510.09
  5. Step 5: Solve for x
    x = 37,524,974,510.09/219,409.41
  6. Step 6: Final answer
    x = 171,027.19

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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.