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Finding the Fourth Proportional to 347,099.93, 520,825.14 and 157,439.42

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Solution

The fourth proportional to 347,099.93, 520,825.14 and 157,439.42 is: 236,238.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,099.93 : 520,825.14 = 157,439.42 : x
  2. Step 2: Convert to fraction form
    347,099.93/520,825.14 = 157,439.42/x
  3. Step 3: Cross multiply
    347,099.93x = 520,825.14 × 157,439.42
  4. Step 4: Simplify right side
    347,099.93x = 81,998,405,358.89
  5. Step 5: Solve for x
    x = 81,998,405,358.89/347,099.93
  6. Step 6: Final answer
    x = 236,238.61

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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.