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Finding the Fourth Proportional to 258,362.86, 356,552.62 and 143,653.17

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Solution

The fourth proportional to 258,362.86, 356,552.62 and 143,653.17 is: 198,247.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,362.86 : 356,552.62 = 143,653.17 : x
  2. Step 2: Convert to fraction form
    258,362.86/356,552.62 = 143,653.17/x
  3. Step 3: Cross multiply
    258,362.86x = 356,552.62 × 143,653.17
  4. Step 4: Simplify right side
    258,362.86x = 51,219,914,134.81
  5. Step 5: Solve for x
    x = 51,219,914,134.81/258,362.86
  6. Step 6: Final answer
    x = 198,247.98

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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.