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Finding the Fourth Proportional to 661,755.33, 992,149.07 and 212,220.32

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Solution

The fourth proportional to 661,755.33, 992,149.07 and 212,220.32 is: 318,175.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,755.33 : 992,149.07 = 212,220.32 : x
  2. Step 2: Convert to fraction form
    661,755.33/992,149.07 = 212,220.32/x
  3. Step 3: Cross multiply
    661,755.33x = 992,149.07 × 212,220.32
  4. Step 4: Simplify right side
    661,755.33x = 210,554,187,101.26
  5. Step 5: Solve for x
    x = 210,554,187,101.26/661,755.33
  6. Step 6: Final answer
    x = 318,175.28

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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.