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Finding the Fourth Proportional to 353,756.35, 488,107.92 and 210,488.41

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Solution

The fourth proportional to 353,756.35, 488,107.92 and 210,488.41 is: 290,428.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,756.35 : 488,107.92 = 210,488.41 : x
  2. Step 2: Convert to fraction form
    353,756.35/488,107.92 = 210,488.41/x
  3. Step 3: Cross multiply
    353,756.35x = 488,107.92 × 210,488.41
  4. Step 4: Simplify right side
    353,756.35x = 102,741,059,989.21
  5. Step 5: Solve for x
    x = 102,741,059,989.21/353,756.35
  6. Step 6: Final answer
    x = 290,428.88

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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.