Home / 287,156.26-396,275.66-159,829.12

Finding the Fourth Proportional to 287,156.26, 396,275.66 and 159,829.12

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Solution

The fourth proportional to 287,156.26, 396,275.66 and 159,829.12 is: 220,564.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,156.26 : 396,275.66 = 159,829.12 : x
  2. Step 2: Convert to fraction form
    287,156.26/396,275.66 = 159,829.12/x
  3. Step 3: Cross multiply
    287,156.26x = 396,275.66 × 159,829.12
  4. Step 4: Simplify right side
    287,156.26x = 63,336,390,015.22
  5. Step 5: Solve for x
    x = 63,336,390,015.22/287,156.26
  6. Step 6: Final answer
    x = 220,564.20

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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.