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Finding the Fourth Proportional to 210,345.30, 315,627.30 and 92,028.60

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Solution

The fourth proportional to 210,345.30, 315,627.30 and 92,028.60 is: 138,090.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,345.30 : 315,627.30 = 92,028.60 : x
  2. Step 2: Convert to fraction form
    210,345.30/315,627.30 = 92,028.60/x
  3. Step 3: Cross multiply
    210,345.30x = 315,627.30 × 92,028.60
  4. Step 4: Simplify right side
    210,345.30x = 29,046,738,540.78
  5. Step 5: Solve for x
    x = 29,046,738,540.78/210,345.30
  6. Step 6: Final answer
    x = 138,090.74

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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.