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Finding the Fourth Proportional to 254,447, 381,670.66 and 79,343

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Solution

The fourth proportional to 254,447, 381,670.66 and 79,343 is: 119,014.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,447 : 381,670.66 = 79,343 : x
  2. Step 2: Convert to fraction form
    254,447/381,670.66 = 79,343/x
  3. Step 3: Cross multiply
    254,447x = 381,670.66 × 79,343
  4. Step 4: Simplify right side
    254,447x = 30,282,895,176.38
  5. Step 5: Solve for x
    x = 30,282,895,176.38/254,447
  6. Step 6: Final answer
    x = 119,014.55

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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.