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Finding the Fourth Proportional to 323,018.26, 485,315.79 and 305,114.02

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Solution

The fourth proportional to 323,018.26, 485,315.79 and 305,114.02 is: 458,415.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,018.26 : 485,315.79 = 305,114.02 : x
  2. Step 2: Convert to fraction form
    323,018.26/485,315.79 = 305,114.02/x
  3. Step 3: Cross multiply
    323,018.26x = 485,315.79 × 305,114.02
  4. Step 4: Simplify right side
    323,018.26x = 148,076,651,656.38
  5. Step 5: Solve for x
    x = 148,076,651,656.38/323,018.26
  6. Step 6: Final answer
    x = 458,415.73

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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.