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Finding the Fourth Proportional to 100,290, 150,435 and 26,418

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Solution

The fourth proportional to 100,290, 150,435 and 26,418 is: 39,627

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,290 : 150,435 = 26,418 : x
  2. Step 2: Convert to fraction form
    100,290/150,435 = 26,418/x
  3. Step 3: Cross multiply
    100,290x = 150,435 × 26,418
  4. Step 4: Simplify right side
    100,290x = 3,974,191,830
  5. Step 5: Solve for x
    x = 3,974,191,830/100,290
  6. Step 6: Final answer
    x = 39,627

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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.