Home / 353,140.20-529,515.90-142,540.20

Finding the Fourth Proportional to 353,140.20, 529,515.90 and 142,540.20

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Solution

The fourth proportional to 353,140.20, 529,515.90 and 142,540.20 is: 213,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,140.20 : 529,515.90 = 142,540.20 : x
  2. Step 2: Convert to fraction form
    353,140.20/529,515.90 = 142,540.20/x
  3. Step 3: Cross multiply
    353,140.20x = 529,515.90 × 142,540.20
  4. Step 4: Simplify right side
    353,140.20x = 75,477,302,289.18
  5. Step 5: Solve for x
    x = 75,477,302,289.18/353,140.20
  6. Step 6: Final answer
    x = 213,731.83

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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.