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Finding the Fourth Proportional to 258,213.90, 356,235.39 and 190,391.39

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Solution

The fourth proportional to 258,213.90, 356,235.39 and 190,391.39 is: 262,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,213.90 : 356,235.39 = 190,391.39 : x
  2. Step 2: Convert to fraction form
    258,213.90/356,235.39 = 190,391.39/x
  3. Step 3: Cross multiply
    258,213.90x = 356,235.39 × 190,391.39
  4. Step 4: Simplify right side
    258,213.90x = 67,824,149,288.12
  5. Step 5: Solve for x
    x = 67,824,149,288.12/258,213.90
  6. Step 6: Final answer
    x = 262,666.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.