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Finding the Fourth Proportional to 258,255.68, 356,290.79 and 149,339.97

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Solution

The fourth proportional to 258,255.68, 356,290.79 and 149,339.97 is: 206,030.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,255.68 : 356,290.79 = 149,339.97 : x
  2. Step 2: Convert to fraction form
    258,255.68/356,290.79 = 149,339.97/x
  3. Step 3: Cross multiply
    258,255.68x = 356,290.79 × 149,339.97
  4. Step 4: Simplify right side
    258,255.68x = 53,208,455,143.18
  5. Step 5: Solve for x
    x = 53,208,455,143.18/258,255.68
  6. Step 6: Final answer
    x = 206,030.15

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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.