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Finding the Fourth Proportional to 478,727.31, 660,635.73 and 263,887.32

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Solution

The fourth proportional to 478,727.31, 660,635.73 and 263,887.32 is: 364,160.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,727.31 : 660,635.73 = 263,887.32 : x
  2. Step 2: Convert to fraction form
    478,727.31/660,635.73 = 263,887.32/x
  3. Step 3: Cross multiply
    478,727.31x = 660,635.73 × 263,887.32
  4. Step 4: Simplify right side
    478,727.31x = 174,333,392,285.94
  5. Step 5: Solve for x
    x = 174,333,392,285.94/478,727.31
  6. Step 6: Final answer
    x = 364,160.12

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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.