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Finding the Fourth Proportional to 287,427.93, 396,662.81 and 160,103.49

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Solution

The fourth proportional to 287,427.93, 396,662.81 and 160,103.49 is: 220,949.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,427.93 : 396,662.81 = 160,103.49 : x
  2. Step 2: Convert to fraction form
    287,427.93/396,662.81 = 160,103.49/x
  3. Step 3: Cross multiply
    287,427.93x = 396,662.81 × 160,103.49
  4. Step 4: Simplify right side
    287,427.93x = 63,507,099,433.69
  5. Step 5: Solve for x
    x = 63,507,099,433.69/287,427.93
  6. Step 6: Final answer
    x = 220,949.65

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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.