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Finding the Fourth Proportional to 397,695.40, 596,636.54 and 131,455.94

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Solution

The fourth proportional to 397,695.40, 596,636.54 and 131,455.94 is: 197,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,695.40 : 596,636.54 = 131,455.94 : x
  2. Step 2: Convert to fraction form
    397,695.40/596,636.54 = 131,455.94/x
  3. Step 3: Cross multiply
    397,695.40x = 596,636.54 × 131,455.94
  4. Step 4: Simplify right side
    397,695.40x = 78,431,414,056.55
  5. Step 5: Solve for x
    x = 78,431,414,056.55/397,695.40
  6. Step 6: Final answer
    x = 197,214.79

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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.