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Finding the Fourth Proportional to 254,459, 381,688.52 and 79,355

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Solution

The fourth proportional to 254,459, 381,688.52 and 79,355 is: 119,032.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,459 : 381,688.52 = 79,355 : x
  2. Step 2: Convert to fraction form
    254,459/381,688.52 = 79,355/x
  3. Step 3: Cross multiply
    254,459x = 381,688.52 × 79,355
  4. Step 4: Simplify right side
    254,459x = 30,288,892,504.60
  5. Step 5: Solve for x
    x = 30,288,892,504.60/254,459
  6. Step 6: Final answer
    x = 119,032.51

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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.