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Finding the Fourth Proportional to 349,446, 524,169 and 100,128

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Solution

The fourth proportional to 349,446, 524,169 and 100,128 is: 150,192

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,446 : 524,169 = 100,128 : x
  2. Step 2: Convert to fraction form
    349,446/524,169 = 100,128/x
  3. Step 3: Cross multiply
    349,446x = 524,169 × 100,128
  4. Step 4: Simplify right side
    349,446x = 52,483,993,632
  5. Step 5: Solve for x
    x = 52,483,993,632/349,446
  6. Step 6: Final answer
    x = 150,192

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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.