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Finding the Fourth Proportional to 397,391.85, 596,004.35 and 131,089.98

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Solution

The fourth proportional to 397,391.85, 596,004.35 and 131,089.98 is: 196,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,391.85 : 596,004.35 = 131,089.98 : x
  2. Step 2: Convert to fraction form
    397,391.85/596,004.35 = 131,089.98/x
  3. Step 3: Cross multiply
    397,391.85x = 596,004.35 × 131,089.98
  4. Step 4: Simplify right side
    397,391.85x = 78,130,197,665.96
  5. Step 5: Solve for x
    x = 78,130,197,665.96/397,391.85
  6. Step 6: Final answer
    x = 196,607.45

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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.