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Finding the Fourth Proportional to 326,946.78, 490,171.50 and 169,074.54

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Solution

The fourth proportional to 326,946.78, 490,171.50 and 169,074.54 is: 253,483.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,946.78 : 490,171.50 = 169,074.54 : x
  2. Step 2: Convert to fraction form
    326,946.78/490,171.50 = 169,074.54/x
  3. Step 3: Cross multiply
    326,946.78x = 490,171.50 × 169,074.54
  4. Step 4: Simplify right side
    326,946.78x = 82,875,520,883.61
  5. Step 5: Solve for x
    x = 82,875,520,883.61/326,946.78
  6. Step 6: Final answer
    x = 253,483.21

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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.