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Finding the Fourth Proportional to 204,485.70, 306,072.45 and 145,436.70

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Solution

The fourth proportional to 204,485.70, 306,072.45 and 145,436.70 is: 217,688.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,485.70 : 306,072.45 = 145,436.70 : x
  2. Step 2: Convert to fraction form
    204,485.70/306,072.45 = 145,436.70/x
  3. Step 3: Cross multiply
    204,485.70x = 306,072.45 × 145,436.70
  4. Step 4: Simplify right side
    204,485.70x = 44,514,167,088.92
  5. Step 5: Solve for x
    x = 44,514,167,088.92/204,485.70
  6. Step 6: Final answer
    x = 217,688.41

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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.