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Finding the Fourth Proportional to 353,246.70, 529,675.65 and 142,646.70

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Solution

The fourth proportional to 353,246.70, 529,675.65 and 142,646.70 is: 213,891.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,246.70 : 529,675.65 = 142,646.70 : x
  2. Step 2: Convert to fraction form
    353,246.70/529,675.65 = 142,646.70/x
  3. Step 3: Cross multiply
    353,246.70x = 529,675.65 × 142,646.70
  4. Step 4: Simplify right side
    353,246.70x = 75,556,483,542.86
  5. Step 5: Solve for x
    x = 75,556,483,542.86/353,246.70
  6. Step 6: Final answer
    x = 213,891.55

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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.