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Finding the Fourth Proportional to 368,999.52, 508,147.12 and 320,579.36

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Solution

The fourth proportional to 368,999.52, 508,147.12 and 320,579.36 is: 441,468.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,999.52 : 508,147.12 = 320,579.36 : x
  2. Step 2: Convert to fraction form
    368,999.52/508,147.12 = 320,579.36/x
  3. Step 3: Cross multiply
    368,999.52x = 508,147.12 × 320,579.36
  4. Step 4: Simplify right side
    368,999.52x = 162,901,478,515.44
  5. Step 5: Solve for x
    x = 162,901,478,515.44/368,999.52
  6. Step 6: Final answer
    x = 441,468.00

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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.