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Finding the Fourth Proportional to 235,245.40, 353,019.30 and 130,139.80

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Solution

The fourth proportional to 235,245.40, 353,019.30 and 130,139.80 is: 195,293.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,245.40 : 353,019.30 = 130,139.80 : x
  2. Step 2: Convert to fraction form
    235,245.40/353,019.30 = 130,139.80/x
  3. Step 3: Cross multiply
    235,245.40x = 353,019.30 × 130,139.80
  4. Step 4: Simplify right side
    235,245.40x = 45,941,861,098.14
  5. Step 5: Solve for x
    x = 45,941,861,098.14/235,245.40
  6. Step 6: Final answer
    x = 195,293.35

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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.