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Finding the Fourth Proportional to 205,090.60, 307,635.90 and 149,103.40

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Solution

The fourth proportional to 205,090.60, 307,635.90 and 149,103.40 is: 223,655.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,090.60 : 307,635.90 = 149,103.40 : x
  2. Step 2: Convert to fraction form
    205,090.60/307,635.90 = 149,103.40/x
  3. Step 3: Cross multiply
    205,090.60x = 307,635.90 × 149,103.40
  4. Step 4: Simplify right side
    205,090.60x = 45,869,558,652.06
  5. Step 5: Solve for x
    x = 45,869,558,652.06/205,090.60
  6. Step 6: Final answer
    x = 223,655.10

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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.