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Finding the Fourth Proportional to 298,457.11, 447,404.21 and 148,555.67

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Solution

The fourth proportional to 298,457.11, 447,404.21 and 148,555.67 is: 222,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,457.11 : 447,404.21 = 148,555.67 : x
  2. Step 2: Convert to fraction form
    298,457.11/447,404.21 = 148,555.67/x
  3. Step 3: Cross multiply
    298,457.11x = 447,404.21 × 148,555.67
  4. Step 4: Simplify right side
    298,457.11x = 66,464,431,434.59
  5. Step 5: Solve for x
    x = 66,464,431,434.59/298,457.11
  6. Step 6: Final answer
    x = 222,693.41

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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.