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Finding the Fourth Proportional to 354,594.90, 489,404.43 and 211,364.22

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Solution

The fourth proportional to 354,594.90, 489,404.43 and 211,364.22 is: 291,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,594.90 : 489,404.43 = 211,364.22 : x
  2. Step 2: Convert to fraction form
    354,594.90/489,404.43 = 211,364.22/x
  3. Step 3: Cross multiply
    354,594.90x = 489,404.43 × 211,364.22
  4. Step 4: Simplify right side
    354,594.90x = 103,442,585,611.50
  5. Step 5: Solve for x
    x = 103,442,585,611.50/354,594.90
  6. Step 6: Final answer
    x = 291,720.46

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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.