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Finding the Fourth Proportional to 266,222.25, 399,391.70 and 100,010.25

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Solution

The fourth proportional to 266,222.25, 399,391.70 and 100,010.25 is: 150,037.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,222.25 : 399,391.70 = 100,010.25 : x
  2. Step 2: Convert to fraction form
    266,222.25/399,391.70 = 100,010.25/x
  3. Step 3: Cross multiply
    266,222.25x = 399,391.70 × 100,010.25
  4. Step 4: Simplify right side
    266,222.25x = 39,943,263,264.87
  5. Step 5: Solve for x
    x = 39,943,263,264.87/266,222.25
  6. Step 6: Final answer
    x = 150,037.28

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1.5x scale

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.