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Finding the Fourth Proportional to 306,100, 459,077.04 and 128,610.40

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Solution

The fourth proportional to 306,100, 459,077.04 and 128,610.40 is: 192,884.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,100 : 459,077.04 = 128,610.40 : x
  2. Step 2: Convert to fraction form
    306,100/459,077.04 = 128,610.40/x
  3. Step 3: Cross multiply
    306,100x = 459,077.04 × 128,610.40
  4. Step 4: Simplify right side
    306,100x = 59,042,081,745.22
  5. Step 5: Solve for x
    x = 59,042,081,745.22/306,100
  6. Step 6: Final answer
    x = 192,884.95

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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.