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Finding the Fourth Proportional to 258,525.77, 356,619.86 and 155,133.22

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Solution

The fourth proportional to 258,525.77, 356,619.86 and 155,133.22 is: 213,996.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,525.77 : 356,619.86 = 155,133.22 : x
  2. Step 2: Convert to fraction form
    258,525.77/356,619.86 = 155,133.22/x
  3. Step 3: Cross multiply
    258,525.77x = 356,619.86 × 155,133.22
  4. Step 4: Simplify right side
    258,525.77x = 55,323,587,197.75
  5. Step 5: Solve for x
    x = 55,323,587,197.75/258,525.77
  6. Step 6: Final answer
    x = 213,996.41

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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.