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Finding the Fourth Proportional to 355,047.63, 489,962.43 and 193,902.18

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Solution

The fourth proportional to 355,047.63, 489,962.43 and 193,902.18 is: 267,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,047.63 : 489,962.43 = 193,902.18 : x
  2. Step 2: Convert to fraction form
    355,047.63/489,962.43 = 193,902.18/x
  3. Step 3: Cross multiply
    355,047.63x = 489,962.43 × 193,902.18
  4. Step 4: Simplify right side
    355,047.63x = 95,004,783,295.10
  5. Step 5: Solve for x
    x = 95,004,783,295.10/355,047.63
  6. Step 6: Final answer
    x = 267,583.21

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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.