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Finding the Fourth Proportional to 298,806.30, 448,464.60 and 121,440.60

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Solution

The fourth proportional to 298,806.30, 448,464.60 and 121,440.60 is: 182,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,806.30 : 448,464.60 = 121,440.60 : x
  2. Step 2: Convert to fraction form
    298,806.30/448,464.60 = 121,440.60/x
  3. Step 3: Cross multiply
    298,806.30x = 448,464.60 × 121,440.60
  4. Step 4: Simplify right side
    298,806.30x = 54,461,810,102.76
  5. Step 5: Solve for x
    x = 54,461,810,102.76/298,806.30
  6. Step 6: Final answer
    x = 182,264.60

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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.