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Finding the Fourth Proportional to 298,670.40, 448,005.60 and 111,657.60

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Solution

The fourth proportional to 298,670.40, 448,005.60 and 111,657.60 is: 167,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,670.40 : 448,005.60 = 111,657.60 : x
  2. Step 2: Convert to fraction form
    298,670.40/448,005.60 = 111,657.60/x
  3. Step 3: Cross multiply
    298,670.40x = 448,005.60 × 111,657.60
  4. Step 4: Simplify right side
    298,670.40x = 50,023,230,082.56
  5. Step 5: Solve for x
    x = 50,023,230,082.56/298,670.40
  6. Step 6: Final answer
    x = 167,486.40

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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.