Home / 217,890.46-300,656.10-122,378.86

Finding the Fourth Proportional to 217,890.46, 300,656.10 and 122,378.86

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Solution

The fourth proportional to 217,890.46, 300,656.10 and 122,378.86 is: 168,864.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,890.46 : 300,656.10 = 122,378.86 : x
  2. Step 2: Convert to fraction form
    217,890.46/300,656.10 = 122,378.86/x
  3. Step 3: Cross multiply
    217,890.46x = 300,656.10 × 122,378.86
  4. Step 4: Simplify right side
    217,890.46x = 36,793,950,770.05
  5. Step 5: Solve for x
    x = 36,793,950,770.05/217,890.46
  6. Step 6: Final answer
    x = 168,864.44

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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.