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Finding the Fourth Proportional to 254,449, 381,673.66 and 79,345

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Solution

The fourth proportional to 254,449, 381,673.66 and 79,345 is: 119,017.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,449 : 381,673.66 = 79,345 : x
  2. Step 2: Convert to fraction form
    254,449/381,673.66 = 79,345/x
  3. Step 3: Cross multiply
    254,449x = 381,673.66 × 79,345
  4. Step 4: Simplify right side
    254,449x = 30,283,896,552.70
  5. Step 5: Solve for x
    x = 30,283,896,552.70/254,449
  6. Step 6: Final answer
    x = 119,017.55

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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.