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Finding the Fourth Proportional to 355,091.60, 490,029.10 and 193,943.72

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Solution

The fourth proportional to 355,091.60, 490,029.10 and 193,943.72 is: 267,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,091.60 : 490,029.10 = 193,943.72 : x
  2. Step 2: Convert to fraction form
    355,091.60/490,029.10 = 193,943.72/x
  3. Step 3: Cross multiply
    355,091.60x = 490,029.10 × 193,943.72
  4. Step 4: Simplify right side
    355,091.60x = 95,038,066,562.25
  5. Step 5: Solve for x
    x = 95,038,066,562.25/355,091.60
  6. Step 6: Final answer
    x = 267,643.80

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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.