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Finding the Fourth Proportional to 445,522.20, 668,308.90 and 130,027.80

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Solution

The fourth proportional to 445,522.20, 668,308.90 and 130,027.80 is: 195,049.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,522.20 : 668,308.90 = 130,027.80 : x
  2. Step 2: Convert to fraction form
    445,522.20/668,308.90 = 130,027.80/x
  3. Step 3: Cross multiply
    445,522.20x = 668,308.90 × 130,027.80
  4. Step 4: Simplify right side
    445,522.20x = 86,898,735,987.42
  5. Step 5: Solve for x
    x = 86,898,735,987.42/445,522.20
  6. Step 6: Final answer
    x = 195,049.17

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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.