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Finding the Fourth Proportional to 297,260.72, 445,957.16 and 139,405.04

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Solution

The fourth proportional to 297,260.72, 445,957.16 and 139,405.04 is: 209,138.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,260.72 : 445,957.16 = 139,405.04 : x
  2. Step 2: Convert to fraction form
    297,260.72/445,957.16 = 139,405.04/x
  3. Step 3: Cross multiply
    297,260.72x = 445,957.16 × 139,405.04
  4. Step 4: Simplify right side
    297,260.72x = 62,168,675,728.09
  5. Step 5: Solve for x
    x = 62,168,675,728.09/297,260.72
  6. Step 6: Final answer
    x = 209,138.55

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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.