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Finding the Fourth Proportional to 319,293.83, 478,989.99 and 108,882.56

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Solution

The fourth proportional to 319,293.83, 478,989.99 and 108,882.56 is: 163,340.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,293.83 : 478,989.99 = 108,882.56 : x
  2. Step 2: Convert to fraction form
    319,293.83/478,989.99 = 108,882.56/x
  3. Step 3: Cross multiply
    319,293.83x = 478,989.99 × 108,882.56
  4. Step 4: Simplify right side
    319,293.83x = 52,153,657,523.05
  5. Step 5: Solve for x
    x = 52,153,657,523.05/319,293.83
  6. Step 6: Final answer
    x = 163,340.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.