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Finding the Fourth Proportional to 201,906.70, 302,860.05 and 122,980.30

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Solution

The fourth proportional to 201,906.70, 302,860.05 and 122,980.30 is: 184,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,906.70 : 302,860.05 = 122,980.30 : x
  2. Step 2: Convert to fraction form
    201,906.70/302,860.05 = 122,980.30/x
  3. Step 3: Cross multiply
    201,906.70x = 302,860.05 × 122,980.30
  4. Step 4: Simplify right side
    201,906.70x = 37,245,819,807.02
  5. Step 5: Solve for x
    x = 37,245,819,807.02/201,906.70
  6. Step 6: Final answer
    x = 184,470.45

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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.