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Finding the Fourth Proportional to 258,103, 356,239.02 and 143,420.98

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Solution

The fourth proportional to 258,103, 356,239.02 and 143,420.98 is: 197,952.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,103 : 356,239.02 = 143,420.98 : x
  2. Step 2: Convert to fraction form
    258,103/356,239.02 = 143,420.98/x
  3. Step 3: Cross multiply
    258,103x = 356,239.02 × 143,420.98
  4. Step 4: Simplify right side
    258,103x = 51,092,149,362.64
  5. Step 5: Solve for x
    x = 51,092,149,362.64/258,103
  6. Step 6: Final answer
    x = 197,952.56

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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.