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Finding the Fourth Proportional to 319,481.55, 478,815.30 and 169,793.55

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Solution

The fourth proportional to 319,481.55, 478,815.30 and 169,793.55 is: 254,474.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,481.55 : 478,815.30 = 169,793.55 : x
  2. Step 2: Convert to fraction form
    319,481.55/478,815.30 = 169,793.55/x
  3. Step 3: Cross multiply
    319,481.55x = 478,815.30 × 169,793.55
  4. Step 4: Simplify right side
    319,481.55x = 81,299,749,581.32
  5. Step 5: Solve for x
    x = 81,299,749,581.32/319,481.55
  6. Step 6: Final answer
    x = 254,474.01

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1.5x scale

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.