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Finding the Fourth Proportional to 297,138.04, 445,707.87 and 72,499.12

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Solution

The fourth proportional to 297,138.04, 445,707.87 and 72,499.12 is: 108,748.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,138.04 : 445,707.87 = 72,499.12 : x
  2. Step 2: Convert to fraction form
    297,138.04/445,707.87 = 72,499.12/x
  3. Step 3: Cross multiply
    297,138.04x = 445,707.87 × 72,499.12
  4. Step 4: Simplify right side
    297,138.04x = 32,313,428,352.07
  5. Step 5: Solve for x
    x = 32,313,428,352.07/297,138.04
  6. Step 6: Final answer
    x = 108,748.88

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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.