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Finding the Fourth Proportional to 353,849.40, 488,352.51 and 210,609.90

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Solution

The fourth proportional to 353,849.40, 488,352.51 and 210,609.90 is: 290,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,849.40 : 488,352.51 = 210,609.90 : x
  2. Step 2: Convert to fraction form
    353,849.40/488,352.51 = 210,609.90/x
  3. Step 3: Cross multiply
    353,849.40x = 488,352.51 × 210,609.90
  4. Step 4: Simplify right side
    353,849.40x = 102,851,873,295.85
  5. Step 5: Solve for x
    x = 102,851,873,295.85/353,849.40
  6. Step 6: Final answer
    x = 290,665.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.