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Finding the Fourth Proportional to 326,031.70, 489,047.55 and 323,958.10

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Solution

The fourth proportional to 326,031.70, 489,047.55 and 323,958.10 is: 485,937.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,031.70 : 489,047.55 = 323,958.10 : x
  2. Step 2: Convert to fraction form
    326,031.70/489,047.55 = 323,958.10/x
  3. Step 3: Cross multiply
    326,031.70x = 489,047.55 × 323,958.10
  4. Step 4: Simplify right side
    326,031.70x = 158,430,915,107.66
  5. Step 5: Solve for x
    x = 158,430,915,107.66/326,031.70
  6. Step 6: Final answer
    x = 485,937.15

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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.