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Finding the Fourth Proportional to 258,997.53, 388,523.28 and 99,073.15

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Solution

The fourth proportional to 258,997.53, 388,523.28 and 99,073.15 is: 148,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,997.53 : 388,523.28 = 99,073.15 : x
  2. Step 2: Convert to fraction form
    258,997.53/388,523.28 = 99,073.15/x
  3. Step 3: Cross multiply
    258,997.53x = 388,523.28 × 99,073.15
  4. Step 4: Simplify right side
    258,997.53x = 38,492,225,690.87
  5. Step 5: Solve for x
    x = 38,492,225,690.87/258,997.53
  6. Step 6: Final answer
    x = 148,620.05

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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.