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Finding the Fourth Proportional to 265,415.20, 397,150.80 and 195,431.20

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Solution

The fourth proportional to 265,415.20, 397,150.80 and 195,431.20 is: 292,431.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,415.20 : 397,150.80 = 195,431.20 : x
  2. Step 2: Convert to fraction form
    265,415.20/397,150.80 = 195,431.20/x
  3. Step 3: Cross multiply
    265,415.20x = 397,150.80 × 195,431.20
  4. Step 4: Simplify right side
    265,415.20x = 77,615,657,424.96
  5. Step 5: Solve for x
    x = 77,615,657,424.96/265,415.20
  6. Step 6: Final answer
    x = 292,431.09

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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.