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Finding the Fourth Proportional to 326,349.91, 489,512.57 and 89,686.44

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Solution

The fourth proportional to 326,349.91, 489,512.57 and 89,686.44 is: 134,526.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,349.91 : 489,512.57 = 89,686.44 : x
  2. Step 2: Convert to fraction form
    326,349.91/489,512.57 = 89,686.44/x
  3. Step 3: Cross multiply
    326,349.91x = 489,512.57 × 89,686.44
  4. Step 4: Simplify right side
    326,349.91x = 43,902,639,290.12
  5. Step 5: Solve for x
    x = 43,902,639,290.12/326,349.91
  6. Step 6: Final answer
    x = 134,526.28

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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.