Home / 386,453.70-579,968.55-199,368.90

Finding the Fourth Proportional to 386,453.70, 579,968.55 and 199,368.90

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Solution

The fourth proportional to 386,453.70, 579,968.55 and 199,368.90 is: 299,201.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,453.70 : 579,968.55 = 199,368.90 : x
  2. Step 2: Convert to fraction form
    386,453.70/579,968.55 = 199,368.90/x
  3. Step 3: Cross multiply
    386,453.70x = 579,968.55 × 199,368.90
  4. Step 4: Simplify right side
    386,453.70x = 115,627,691,848.10
  5. Step 5: Solve for x
    x = 115,627,691,848.10/386,453.70
  6. Step 6: Final answer
    x = 299,201.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.