Home / 287,062.35-396,216.36-222,403.70

Finding the Fourth Proportional to 287,062.35, 396,216.36 and 222,403.70

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Solution

The fourth proportional to 287,062.35, 396,216.36 and 222,403.70 is: 306,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,062.35 : 396,216.36 = 222,403.70 : x
  2. Step 2: Convert to fraction form
    287,062.35/396,216.36 = 222,403.70/x
  3. Step 3: Cross multiply
    287,062.35x = 396,216.36 × 222,403.70
  4. Step 4: Simplify right side
    287,062.35x = 88,119,982,483.45
  5. Step 5: Solve for x
    x = 88,119,982,483.45/287,062.35
  6. Step 6: Final answer
    x = 306,971.58

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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.