Home / 287,201.21-396,344.63-159,885.41

Finding the Fourth Proportional to 287,201.21, 396,344.63 and 159,885.41

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Solution

The fourth proportional to 287,201.21, 396,344.63 and 159,885.41 is: 220,645.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,201.21 : 396,344.63 = 159,885.41 : x
  2. Step 2: Convert to fraction form
    287,201.21/396,344.63 = 159,885.41/x
  3. Step 3: Cross multiply
    287,201.21x = 396,344.63 × 159,885.41
  4. Step 4: Simplify right side
    287,201.21x = 63,369,722,869.42
  5. Step 5: Solve for x
    x = 63,369,722,869.42/287,201.21
  6. Step 6: Final answer
    x = 220,645.74

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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.