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Finding the Fourth Proportional to 297,074.64, 445,728.66 and 130,746

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Solution

The fourth proportional to 297,074.64, 445,728.66 and 130,746 is: 196,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,074.64 : 445,728.66 = 130,746 : x
  2. Step 2: Convert to fraction form
    297,074.64/445,728.66 = 130,746/x
  3. Step 3: Cross multiply
    297,074.64x = 445,728.66 × 130,746
  4. Step 4: Simplify right side
    297,074.64x = 58,277,239,380.36
  5. Step 5: Solve for x
    x = 58,277,239,380.36/297,074.64
  6. Step 6: Final answer
    x = 196,170.36

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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.