Home / 815,033.72-1,222,492.86-215,981.61

Finding the Fourth Proportional to 815,033.72, 1,222,492.86 and 215,981.61

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Solution

The fourth proportional to 815,033.72, 1,222,492.86 and 215,981.61 is: 323,957.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,033.72 : 1,222,492.86 = 215,981.61 : x
  2. Step 2: Convert to fraction form
    815,033.72/1,222,492.86 = 215,981.61/x
  3. Step 3: Cross multiply
    815,033.72x = 1,222,492.86 × 215,981.61
  4. Step 4: Simplify right side
    815,033.72x = 264,035,976,116.31
  5. Step 5: Solve for x
    x = 264,035,976,116.31/815,033.72
  6. Step 6: Final answer
    x = 323,957.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.