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Finding the Fourth Proportional to 353,241.77, 487,302.18 and 209,900.30

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Solution

The fourth proportional to 353,241.77, 487,302.18 and 209,900.30 is: 289,560.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,241.77 : 487,302.18 = 209,900.30 : x
  2. Step 2: Convert to fraction form
    353,241.77/487,302.18 = 209,900.30/x
  3. Step 3: Cross multiply
    353,241.77x = 487,302.18 × 209,900.30
  4. Step 4: Simplify right side
    353,241.77x = 102,284,873,772.65
  5. Step 5: Solve for x
    x = 102,284,873,772.65/353,241.77
  6. Step 6: Final answer
    x = 289,560.53

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1.5x scale

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.