Home / 258,259.77-356,407.62-143,540.70

Finding the Fourth Proportional to 258,259.77, 356,407.62 and 143,540.70

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Solution

The fourth proportional to 258,259.77, 356,407.62 and 143,540.70 is: 198,091.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,259.77 : 356,407.62 = 143,540.70 : x
  2. Step 2: Convert to fraction form
    258,259.77/356,407.62 = 143,540.70/x
  3. Step 3: Cross multiply
    258,259.77x = 356,407.62 × 143,540.70
  4. Step 4: Simplify right side
    258,259.77x = 51,158,999,260.13
  5. Step 5: Solve for x
    x = 51,158,999,260.13/258,259.77
  6. Step 6: Final answer
    x = 198,091.24

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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.