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Finding the Fourth Proportional to 297,138.40, 445,708.56 and 75,522.40

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Solution

The fourth proportional to 297,138.40, 445,708.56 and 75,522.40 is: 113,283.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,138.40 : 445,708.56 = 75,522.40 : x
  2. Step 2: Convert to fraction form
    297,138.40/445,708.56 = 75,522.40/x
  3. Step 3: Cross multiply
    297,138.40x = 445,708.56 × 75,522.40
  4. Step 4: Simplify right side
    297,138.40x = 33,660,980,151.74
  5. Step 5: Solve for x
    x = 33,660,980,151.74/297,138.40
  6. Step 6: Final answer
    x = 113,283.84

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1.5x scale

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.