Home / 386,899.81-533,043.41-299,383.97

Finding the Fourth Proportional to 386,899.81, 533,043.41 and 299,383.97

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Solution

The fourth proportional to 386,899.81, 533,043.41 and 299,383.97 is: 412,470.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,899.81 : 533,043.41 = 299,383.97 : x
  2. Step 2: Convert to fraction form
    386,899.81/533,043.41 = 299,383.97/x
  3. Step 3: Cross multiply
    386,899.81x = 533,043.41 × 299,383.97
  4. Step 4: Simplify right side
    386,899.81x = 159,584,652,268.14
  5. Step 5: Solve for x
    x = 159,584,652,268.14/386,899.81
  6. Step 6: Final answer
    x = 412,470.23

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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.