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Finding the Fourth Proportional to 326,098.70, 489,148.05 and 231,620.30

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Solution

The fourth proportional to 326,098.70, 489,148.05 and 231,620.30 is: 347,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,098.70 : 489,148.05 = 231,620.30 : x
  2. Step 2: Convert to fraction form
    326,098.70/489,148.05 = 231,620.30/x
  3. Step 3: Cross multiply
    326,098.70x = 489,148.05 × 231,620.30
  4. Step 4: Simplify right side
    326,098.70x = 113,296,618,085.42
  5. Step 5: Solve for x
    x = 113,296,618,085.42/326,098.70
  6. Step 6: Final answer
    x = 347,430.45

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1.5x scale

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.