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Finding the Fourth Proportional to 258,791.37, 357,049.65 and 145,592.25

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Solution

The fourth proportional to 258,791.37, 357,049.65 and 145,592.25 is: 200,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,791.37 : 357,049.65 = 145,592.25 : x
  2. Step 2: Convert to fraction form
    258,791.37/357,049.65 = 145,592.25/x
  3. Step 3: Cross multiply
    258,791.37x = 357,049.65 × 145,592.25
  4. Step 4: Simplify right side
    258,791.37x = 51,983,661,905.21
  5. Step 5: Solve for x
    x = 51,983,661,905.21/258,791.37
  6. Step 6: Final answer
    x = 200,870.93

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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.