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Finding the Fourth Proportional to 254,402, 381,603 and 79,298

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Solution

The fourth proportional to 254,402, 381,603 and 79,298 is: 118,947

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,402 : 381,603 = 79,298 : x
  2. Step 2: Convert to fraction form
    254,402/381,603 = 79,298/x
  3. Step 3: Cross multiply
    254,402x = 381,603 × 79,298
  4. Step 4: Simplify right side
    254,402x = 30,260,354,694
  5. Step 5: Solve for x
    x = 30,260,354,694/254,402
  6. Step 6: Final answer
    x = 118,947

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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.