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Finding the Fourth Proportional to 213,381.98, 294,470.24 and 117,890.88

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Solution

The fourth proportional to 213,381.98, 294,470.24 and 117,890.88 is: 162,691.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,381.98 : 294,470.24 = 117,890.88 : x
  2. Step 2: Convert to fraction form
    213,381.98/294,470.24 = 117,890.88/x
  3. Step 3: Cross multiply
    213,381.98x = 294,470.24 × 117,890.88
  4. Step 4: Simplify right side
    213,381.98x = 34,715,354,033.69
  5. Step 5: Solve for x
    x = 34,715,354,033.69/213,381.98
  6. Step 6: Final answer
    x = 162,691.12

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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.