Home / 287,455.88-396,701.38-160,131.56

Finding the Fourth Proportional to 287,455.88, 396,701.38 and 160,131.56

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Solution

The fourth proportional to 287,455.88, 396,701.38 and 160,131.56 is: 220,988.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,455.88 : 396,701.38 = 160,131.56 : x
  2. Step 2: Convert to fraction form
    287,455.88/396,701.38 = 160,131.56/x
  3. Step 3: Cross multiply
    287,455.88x = 396,701.38 × 160,131.56
  4. Step 4: Simplify right side
    287,455.88x = 63,524,410,833.55
  5. Step 5: Solve for x
    x = 63,524,410,833.55/287,455.88
  6. Step 6: Final answer
    x = 220,988.39

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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.