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Finding the Fourth Proportional to 210,435.52, 315,750.66 and 92,091.28

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Solution

The fourth proportional to 210,435.52, 315,750.66 and 92,091.28 is: 138,179.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,435.52 : 315,750.66 = 92,091.28 : x
  2. Step 2: Convert to fraction form
    210,435.52/315,750.66 = 92,091.28/x
  3. Step 3: Cross multiply
    210,435.52x = 315,750.66 × 92,091.28
  4. Step 4: Simplify right side
    210,435.52x = 29,077,882,440.24
  5. Step 5: Solve for x
    x = 29,077,882,440.24/210,435.52
  6. Step 6: Final answer
    x = 138,179.54

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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.