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Finding the Fourth Proportional to 330,833.80, 496,007.70 and 131,055.40

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Solution

The fourth proportional to 330,833.80, 496,007.70 and 131,055.40 is: 196,486.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,833.80 : 496,007.70 = 131,055.40 : x
  2. Step 2: Convert to fraction form
    330,833.80/496,007.70 = 131,055.40/x
  3. Step 3: Cross multiply
    330,833.80x = 496,007.70 × 131,055.40
  4. Step 4: Simplify right side
    330,833.80x = 65,004,487,526.58
  5. Step 5: Solve for x
    x = 65,004,487,526.58/330,833.80
  6. Step 6: Final answer
    x = 196,486.84

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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.