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Finding the Fourth Proportional to 321,097.60, 481,500.60 and 121,351.60

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Solution

The fourth proportional to 321,097.60, 481,500.60 and 121,351.60 is: 181,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,097.60 : 481,500.60 = 121,351.60 : x
  2. Step 2: Convert to fraction form
    321,097.60/481,500.60 = 121,351.60/x
  3. Step 3: Cross multiply
    321,097.60x = 481,500.60 × 121,351.60
  4. Step 4: Simplify right side
    321,097.60x = 58,430,868,210.96
  5. Step 5: Solve for x
    x = 58,430,868,210.96/321,097.60
  6. Step 6: Final answer
    x = 181,972.30

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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.