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Finding the Fourth Proportional to 478,359.54, 660,141.06 and 263,505

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Solution

The fourth proportional to 478,359.54, 660,141.06 and 263,505 is: 363,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,359.54 : 660,141.06 = 263,505 : x
  2. Step 2: Convert to fraction form
    478,359.54/660,141.06 = 263,505/x
  3. Step 3: Cross multiply
    478,359.54x = 660,141.06 × 263,505
  4. Step 4: Simplify right side
    478,359.54x = 173,950,470,015.30
  5. Step 5: Solve for x
    x = 173,950,470,015.30/478,359.54
  6. Step 6: Final answer
    x = 363,639.60

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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.