Home / 286,989.72-396,045.81-159,665.28

Finding the Fourth Proportional to 286,989.72, 396,045.81 and 159,665.28

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Solution

The fourth proportional to 286,989.72, 396,045.81 and 159,665.28 is: 220,338.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,989.72 : 396,045.81 = 159,665.28 : x
  2. Step 2: Convert to fraction form
    286,989.72/396,045.81 = 159,665.28/x
  3. Step 3: Cross multiply
    286,989.72x = 396,045.81 × 159,665.28
  4. Step 4: Simplify right side
    286,989.72x = 63,234,765,146.48
  5. Step 5: Solve for x
    x = 63,234,765,146.48/286,989.72
  6. Step 6: Final answer
    x = 220,338.08

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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.