Home / 319,273.60-478,975.20-108,932.80

Finding the Fourth Proportional to 319,273.60, 478,975.20 and 108,932.80

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Solution

The fourth proportional to 319,273.60, 478,975.20 and 108,932.80 is: 163,421.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,273.60 : 478,975.20 = 108,932.80 : x
  2. Step 2: Convert to fraction form
    319,273.60/478,975.20 = 108,932.80/x
  3. Step 3: Cross multiply
    319,273.60x = 478,975.20 × 108,932.80
  4. Step 4: Simplify right side
    319,273.60x = 52,176,109,666.56
  5. Step 5: Solve for x
    x = 52,176,109,666.56/319,273.60
  6. Step 6: Final answer
    x = 163,421.31

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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.