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Finding the Fourth Proportional to 386,648.73, 579,950.01 and 120,371.76

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Solution

The fourth proportional to 386,648.73, 579,950.01 and 120,371.76 is: 180,550.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,648.73 : 579,950.01 = 120,371.76 : x
  2. Step 2: Convert to fraction form
    386,648.73/579,950.01 = 120,371.76/x
  3. Step 3: Cross multiply
    386,648.73x = 579,950.01 × 120,371.76
  4. Step 4: Simplify right side
    386,648.73x = 69,809,603,415.72
  5. Step 5: Solve for x
    x = 69,809,603,415.72/386,648.73
  6. Step 6: Final answer
    x = 180,550.45

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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.