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Finding the Fourth Proportional to 205,186.60, 307,808.70 and 64,930.60

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Solution

The fourth proportional to 205,186.60, 307,808.70 and 64,930.60 is: 97,405.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,186.60 : 307,808.70 = 64,930.60 : x
  2. Step 2: Convert to fraction form
    205,186.60/307,808.70 = 64,930.60/x
  3. Step 3: Cross multiply
    205,186.60x = 307,808.70 × 64,930.60
  4. Step 4: Simplify right side
    205,186.60x = 19,986,203,576.22
  5. Step 5: Solve for x
    x = 19,986,203,576.22/205,186.60
  6. Step 6: Final answer
    x = 97,405.01

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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.