Home / 287,211.78-396,317.86-166,336.28

Finding the Fourth Proportional to 287,211.78, 396,317.86 and 166,336.28

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Solution

The fourth proportional to 287,211.78, 396,317.86 and 166,336.28 is: 229,524.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,211.78 : 396,317.86 = 166,336.28 : x
  2. Step 2: Convert to fraction form
    287,211.78/396,317.86 = 166,336.28/x
  3. Step 3: Cross multiply
    287,211.78x = 396,317.86 × 166,336.28
  4. Step 4: Simplify right side
    287,211.78x = 65,922,038,529.96
  5. Step 5: Solve for x
    x = 65,922,038,529.96/287,211.78
  6. Step 6: Final answer
    x = 229,524.15

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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.