Home / 287,685.15-396,997.25-160,358.01

Finding the Fourth Proportional to 287,685.15, 396,997.25 and 160,358.01

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Solution

The fourth proportional to 287,685.15, 396,997.25 and 160,358.01 is: 221,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,685.15 : 396,997.25 = 160,358.01 : x
  2. Step 2: Convert to fraction form
    287,685.15/396,997.25 = 160,358.01/x
  3. Step 3: Cross multiply
    287,685.15x = 396,997.25 × 160,358.01
  4. Step 4: Simplify right side
    287,685.15x = 63,661,688,183.68
  5. Step 5: Solve for x
    x = 63,661,688,183.68/287,685.15
  6. Step 6: Final answer
    x = 221,289.45

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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.