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Finding the Fourth Proportional to 297,258.72, 445,954.16 and 139,403.04

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Solution

The fourth proportional to 297,258.72, 445,954.16 and 139,403.04 is: 209,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,258.72 : 445,954.16 = 139,403.04 : x
  2. Step 2: Convert to fraction form
    297,258.72/445,954.16 = 139,403.04/x
  3. Step 3: Cross multiply
    297,258.72x = 445,954.16 × 139,403.04
  4. Step 4: Simplify right side
    297,258.72x = 62,167,365,604.65
  5. Step 5: Solve for x
    x = 62,167,365,604.65/297,258.72
  6. Step 6: Final answer
    x = 209,135.55

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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.