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Finding the Fourth Proportional to 326,312.48, 489,481.98 and 155,446.34

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Solution

The fourth proportional to 326,312.48, 489,481.98 and 155,446.34 is: 233,175.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,312.48 : 489,481.98 = 155,446.34 : x
  2. Step 2: Convert to fraction form
    326,312.48/489,481.98 = 155,446.34/x
  3. Step 3: Cross multiply
    326,312.48x = 489,481.98 × 155,446.34
  4. Step 4: Simplify right side
    326,312.48x = 76,088,182,286.95
  5. Step 5: Solve for x
    x = 76,088,182,286.95/326,312.48
  6. Step 6: Final answer
    x = 233,175.83

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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.