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Finding the Fourth Proportional to 258,362.36, 356,552.21 and 143,642.90

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Solution

The fourth proportional to 258,362.36, 356,552.21 and 143,642.90 is: 198,233.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,362.36 : 356,552.21 = 143,642.90 : x
  2. Step 2: Convert to fraction form
    258,362.36/356,552.21 = 143,642.90/x
  3. Step 3: Cross multiply
    258,362.36x = 356,552.21 × 143,642.90
  4. Step 4: Simplify right side
    258,362.36x = 51,216,194,696.30
  5. Step 5: Solve for x
    x = 51,216,194,696.30/258,362.36
  6. Step 6: Final answer
    x = 198,233.96

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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.