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Finding the Fourth Proportional to 387,071.73, 580,584.51 and 120,794.76

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Solution

The fourth proportional to 387,071.73, 580,584.51 and 120,794.76 is: 181,184.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,071.73 : 580,584.51 = 120,794.76 : x
  2. Step 2: Convert to fraction form
    387,071.73/580,584.51 = 120,794.76/x
  3. Step 3: Cross multiply
    387,071.73x = 580,584.51 × 120,794.76
  4. Step 4: Simplify right side
    387,071.73x = 70,131,566,545.17
  5. Step 5: Solve for x
    x = 70,131,566,545.17/387,071.73
  6. Step 6: Final answer
    x = 181,184.94

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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.