Home / 219,648.06-303,032.07-129,006.90

Finding the Fourth Proportional to 219,648.06, 303,032.07 and 129,006.90

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Solution

The fourth proportional to 219,648.06, 303,032.07 and 129,006.90 is: 177,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,648.06 : 303,032.07 = 129,006.90 : x
  2. Step 2: Convert to fraction form
    219,648.06/303,032.07 = 129,006.90/x
  3. Step 3: Cross multiply
    219,648.06x = 303,032.07 × 129,006.90
  4. Step 4: Simplify right side
    219,648.06x = 39,093,227,951.28
  5. Step 5: Solve for x
    x = 39,093,227,951.28/219,648.06
  6. Step 6: Final answer
    x = 177,981.21

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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.