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Finding the Fourth Proportional to 315,887.02, 434,825.58 and 275,530.48

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Solution

The fourth proportional to 315,887.02, 434,825.58 and 275,530.48 is: 379,273.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,887.02 : 434,825.58 = 275,530.48 : x
  2. Step 2: Convert to fraction form
    315,887.02/434,825.58 = 275,530.48/x
  3. Step 3: Cross multiply
    315,887.02x = 434,825.58 × 275,530.48
  4. Step 4: Simplify right side
    315,887.02x = 119,807,700,773.68
  5. Step 5: Solve for x
    x = 119,807,700,773.68/315,887.02
  6. Step 6: Final answer
    x = 379,273.90

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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.