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Finding the Fourth Proportional to 254,467, 381,700.50 and 79,363

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Solution

The fourth proportional to 254,467, 381,700.50 and 79,363 is: 119,044.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,467 : 381,700.50 = 79,363 : x
  2. Step 2: Convert to fraction form
    254,467/381,700.50 = 79,363/x
  3. Step 3: Cross multiply
    254,467x = 381,700.50 × 79,363
  4. Step 4: Simplify right side
    254,467x = 30,292,896,781.50
  5. Step 5: Solve for x
    x = 30,292,896,781.50/254,467
  6. Step 6: Final answer
    x = 119,044.50

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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.