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Finding the Fourth Proportional to 354,521.22, 489,243.51 and 211,363.62

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Solution

The fourth proportional to 354,521.22, 489,243.51 and 211,363.62 is: 291,684.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,521.22 : 489,243.51 = 211,363.62 : x
  2. Step 2: Convert to fraction form
    354,521.22/489,243.51 = 211,363.62/x
  3. Step 3: Cross multiply
    354,521.22x = 489,243.51 × 211,363.62
  4. Step 4: Simplify right side
    354,521.22x = 103,408,279,335.11
  5. Step 5: Solve for x
    x = 103,408,279,335.11/354,521.22
  6. Step 6: Final answer
    x = 291,684.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.