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Finding the Fourth Proportional to 207,090.60, 310,635.90 and 199,217.40

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Solution

The fourth proportional to 207,090.60, 310,635.90 and 199,217.40 is: 298,826.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,090.60 : 310,635.90 = 199,217.40 : x
  2. Step 2: Convert to fraction form
    207,090.60/310,635.90 = 199,217.40/x
  3. Step 3: Cross multiply
    207,090.60x = 310,635.90 × 199,217.40
  4. Step 4: Simplify right side
    207,090.60x = 61,884,076,344.66
  5. Step 5: Solve for x
    x = 61,884,076,344.66/207,090.60
  6. Step 6: Final answer
    x = 298,826.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.