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Finding the Fourth Proportional to 355,115.32, 490,055.88 and 193,970.32

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Solution

The fourth proportional to 355,115.32, 490,055.88 and 193,970.32 is: 267,677.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,115.32 : 490,055.88 = 193,970.32 : x
  2. Step 2: Convert to fraction form
    355,115.32/490,055.88 = 193,970.32/x
  3. Step 3: Cross multiply
    355,115.32x = 490,055.88 × 193,970.32
  4. Step 4: Simplify right side
    355,115.32x = 95,056,295,861.48
  5. Step 5: Solve for x
    x = 95,056,295,861.48/355,115.32
  6. Step 6: Final answer
    x = 267,677.26

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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.