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Finding the Fourth Proportional to 353,103.20, 529,460.40 and 142,503.20

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Solution

The fourth proportional to 353,103.20, 529,460.40 and 142,503.20 is: 213,676.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,103.20 : 529,460.40 = 142,503.20 : x
  2. Step 2: Convert to fraction form
    353,103.20/529,460.40 = 142,503.20/x
  3. Step 3: Cross multiply
    353,103.20x = 529,460.40 × 142,503.20
  4. Step 4: Simplify right side
    353,103.20x = 75,449,801,273.28
  5. Step 5: Solve for x
    x = 75,449,801,273.28/353,103.20
  6. Step 6: Final answer
    x = 213,676.35

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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.