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Finding the Fourth Proportional to 355,073.57, 489,993.94 and 193,929.25

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Solution

The fourth proportional to 355,073.57, 489,993.94 and 193,929.25 is: 267,618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,073.57 : 489,993.94 = 193,929.25 : x
  2. Step 2: Convert to fraction form
    355,073.57/489,993.94 = 193,929.25/x
  3. Step 3: Cross multiply
    355,073.57x = 489,993.94 × 193,929.25
  4. Step 4: Simplify right side
    355,073.57x = 95,024,157,288.75
  5. Step 5: Solve for x
    x = 95,024,157,288.75/355,073.57
  6. Step 6: Final answer
    x = 267,618.22

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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.