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Finding the Fourth Proportional to 297,208.40, 445,812.60 and 131,320.40

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Solution

The fourth proportional to 297,208.40, 445,812.60 and 131,320.40 is: 196,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,208.40 : 445,812.60 = 131,320.40 : x
  2. Step 2: Convert to fraction form
    297,208.40/445,812.60 = 131,320.40/x
  3. Step 3: Cross multiply
    297,208.40x = 445,812.60 × 131,320.40
  4. Step 4: Simplify right side
    297,208.40x = 58,544,288,957.04
  5. Step 5: Solve for x
    x = 58,544,288,957.04/297,208.40
  6. Step 6: Final answer
    x = 196,980.60

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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.