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Finding the Fourth Proportional to 386,600.92, 579,762.32 and 133,812.76

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Solution

The fourth proportional to 386,600.92, 579,762.32 and 133,812.76 is: 200,671.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,600.92 : 579,762.32 = 133,812.76 : x
  2. Step 2: Convert to fraction form
    386,600.92/579,762.32 = 133,812.76/x
  3. Step 3: Cross multiply
    386,600.92x = 579,762.32 × 133,812.76
  4. Step 4: Simplify right side
    386,600.92x = 77,579,596,183.20
  5. Step 5: Solve for x
    x = 77,579,596,183.20/386,600.92
  6. Step 6: Final answer
    x = 200,671.01

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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.