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Finding the Fourth Proportional to 307,617.20, 461,425.80 and 188,903.60

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Solution

The fourth proportional to 307,617.20, 461,425.80 and 188,903.60 is: 283,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,617.20 : 461,425.80 = 188,903.60 : x
  2. Step 2: Convert to fraction form
    307,617.20/461,425.80 = 188,903.60/x
  3. Step 3: Cross multiply
    307,617.20x = 461,425.80 × 188,903.60
  4. Step 4: Simplify right side
    307,617.20x = 87,164,994,752.88
  5. Step 5: Solve for x
    x = 87,164,994,752.88/307,617.20
  6. Step 6: Final answer
    x = 283,355.40

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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.