Home / 217,667.40-300,364.54-122,155.66

Finding the Fourth Proportional to 217,667.40, 300,364.54 and 122,155.66

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Solution

The fourth proportional to 217,667.40, 300,364.54 and 122,155.66 is: 168,565.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,667.40 : 300,364.54 = 122,155.66 : x
  2. Step 2: Convert to fraction form
    217,667.40/300,364.54 = 122,155.66/x
  3. Step 3: Cross multiply
    217,667.40x = 300,364.54 × 122,155.66
  4. Step 4: Simplify right side
    217,667.40x = 36,691,228,624.30
  5. Step 5: Solve for x
    x = 36,691,228,624.30/217,667.40
  6. Step 6: Final answer
    x = 168,565.57

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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.