Home / 287,070.72-396,151.38-166,217.28

Finding the Fourth Proportional to 287,070.72, 396,151.38 and 166,217.28

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Solution

The fourth proportional to 287,070.72, 396,151.38 and 166,217.28 is: 229,376.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,070.72 : 396,151.38 = 166,217.28 : x
  2. Step 2: Convert to fraction form
    287,070.72/396,151.38 = 166,217.28/x
  3. Step 3: Cross multiply
    287,070.72x = 396,151.38 × 166,217.28
  4. Step 4: Simplify right side
    287,070.72x = 65,847,204,851.85
  5. Step 5: Solve for x
    x = 65,847,204,851.85/287,070.72
  6. Step 6: Final answer
    x = 229,376.25

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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.