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Finding the Fourth Proportional to 279,113.54, 385,165.95 and 151,789.28

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Solution

The fourth proportional to 279,113.54, 385,165.95 and 151,789.28 is: 209,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,113.54 : 385,165.95 = 151,789.28 : x
  2. Step 2: Convert to fraction form
    279,113.54/385,165.95 = 151,789.28/x
  3. Step 3: Cross multiply
    279,113.54x = 385,165.95 × 151,789.28
  4. Step 4: Simplify right side
    279,113.54x = 58,464,062,231.02
  5. Step 5: Solve for x
    x = 58,464,062,231.02/279,113.54
  6. Step 6: Final answer
    x = 209,463.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.