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Finding the Fourth Proportional to 258,365.32, 356,573.64 and 143,655.37

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Solution

The fourth proportional to 258,365.32, 356,573.64 and 143,655.37 is: 198,260.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,365.32 : 356,573.64 = 143,655.37 : x
  2. Step 2: Convert to fraction form
    258,365.32/356,573.64 = 143,655.37/x
  3. Step 3: Cross multiply
    258,365.32x = 356,573.64 × 143,655.37
  4. Step 4: Simplify right side
    258,365.32x = 51,223,718,186.45
  5. Step 5: Solve for x
    x = 51,223,718,186.45/258,365.32
  6. Step 6: Final answer
    x = 198,260.81

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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.