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Finding the Fourth Proportional to 279,420.76, 419,150.58 and 92,563.48

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Solution

The fourth proportional to 279,420.76, 419,150.58 and 92,563.48 is: 138,851.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,420.76 : 419,150.58 = 92,563.48 : x
  2. Step 2: Convert to fraction form
    279,420.76/419,150.58 = 92,563.48/x
  3. Step 3: Cross multiply
    279,420.76x = 419,150.58 × 92,563.48
  4. Step 4: Simplify right side
    279,420.76x = 38,798,036,328.82
  5. Step 5: Solve for x
    x = 38,798,036,328.82/279,420.76
  6. Step 6: Final answer
    x = 138,851.66

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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.