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Finding the Fourth Proportional to 298,913.60, 448,370.40 and 220,181.60

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Solution

The fourth proportional to 298,913.60, 448,370.40 and 220,181.60 is: 330,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,913.60 : 448,370.40 = 220,181.60 : x
  2. Step 2: Convert to fraction form
    298,913.60/448,370.40 = 220,181.60/x
  3. Step 3: Cross multiply
    298,913.60x = 448,370.40 × 220,181.60
  4. Step 4: Simplify right side
    298,913.60x = 98,722,912,064.64
  5. Step 5: Solve for x
    x = 98,722,912,064.64/298,913.60
  6. Step 6: Final answer
    x = 330,272.40

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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.