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Finding the Fourth Proportional to 306,139.02, 422,506.02 and 185,346.87

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Solution

The fourth proportional to 306,139.02, 422,506.02 and 185,346.87 is: 255,799.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,139.02 : 422,506.02 = 185,346.87 : x
  2. Step 2: Convert to fraction form
    306,139.02/422,506.02 = 185,346.87/x
  3. Step 3: Cross multiply
    306,139.02x = 422,506.02 × 185,346.87
  4. Step 4: Simplify right side
    306,139.02x = 78,310,166,431.23
  5. Step 5: Solve for x
    x = 78,310,166,431.23/306,139.02
  6. Step 6: Final answer
    x = 255,799.37

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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.