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Finding the Fourth Proportional to 259,702.38, 389,728.53 and 101,912.22

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Solution

The fourth proportional to 259,702.38, 389,728.53 and 101,912.22 is: 152,936.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,702.38 : 389,728.53 = 101,912.22 : x
  2. Step 2: Convert to fraction form
    259,702.38/389,728.53 = 101,912.22/x
  3. Step 3: Cross multiply
    259,702.38x = 389,728.53 × 101,912.22
  4. Step 4: Simplify right side
    259,702.38x = 39,718,099,689.64
  5. Step 5: Solve for x
    x = 39,718,099,689.64/259,702.38
  6. Step 6: Final answer
    x = 152,936.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.