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Finding the Fourth Proportional to 478,420.94, 660,217.83 and 263,556.02

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Solution

The fourth proportional to 478,420.94, 660,217.83 and 263,556.02 is: 363,705.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,420.94 : 660,217.83 = 263,556.02 : x
  2. Step 2: Convert to fraction form
    478,420.94/660,217.83 = 263,556.02/x
  3. Step 3: Cross multiply
    478,420.94x = 660,217.83 × 263,556.02
  4. Step 4: Simplify right side
    478,420.94x = 174,004,383,607.84
  5. Step 5: Solve for x
    x = 174,004,383,607.84/478,420.94
  6. Step 6: Final answer
    x = 363,705.62

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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.