Home / 287,403.55-396,617-166,614.86

Finding the Fourth Proportional to 287,403.55, 396,617 and 166,614.86

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Solution

The fourth proportional to 287,403.55, 396,617 and 166,614.86 is: 229,928.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,403.55 : 396,617 = 166,614.86 : x
  2. Step 2: Convert to fraction form
    287,403.55/396,617 = 166,614.86/x
  3. Step 3: Cross multiply
    287,403.55x = 396,617 × 166,614.86
  4. Step 4: Simplify right side
    287,403.55x = 66,082,285,928.62
  5. Step 5: Solve for x
    x = 66,082,285,928.62/287,403.55
  6. Step 6: Final answer
    x = 229,928.57

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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.