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Finding the Fourth Proportional to 318,835.44, 478,074.60 and 147,873.84

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Solution

The fourth proportional to 318,835.44, 478,074.60 and 147,873.84 is: 221,727.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,835.44 : 478,074.60 = 147,873.84 : x
  2. Step 2: Convert to fraction form
    318,835.44/478,074.60 = 147,873.84/x
  3. Step 3: Cross multiply
    318,835.44x = 478,074.60 × 147,873.84
  4. Step 4: Simplify right side
    318,835.44x = 70,694,726,908.46
  5. Step 5: Solve for x
    x = 70,694,726,908.46/318,835.44
  6. Step 6: Final answer
    x = 221,727.95

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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.