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Finding the Fourth Proportional to 478,759.21, 660,717.27 and 263,898.79

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Solution

The fourth proportional to 478,759.21, 660,717.27 and 263,898.79 is: 364,196.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,759.21 : 660,717.27 = 263,898.79 : x
  2. Step 2: Convert to fraction form
    478,759.21/660,717.27 = 263,898.79/x
  3. Step 3: Cross multiply
    478,759.21x = 660,717.27 × 263,898.79
  4. Step 4: Simplify right side
    478,759.21x = 174,362,483,462.02
  5. Step 5: Solve for x
    x = 174,362,483,462.02/478,759.21
  6. Step 6: Final answer
    x = 364,196.62

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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.