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Finding the Fourth Proportional to 216,699.60, 324,919.80 and 111,723.60

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Solution

The fourth proportional to 216,699.60, 324,919.80 and 111,723.60 is: 167,518.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,699.60 : 324,919.80 = 111,723.60 : x
  2. Step 2: Convert to fraction form
    216,699.60/324,919.80 = 111,723.60/x
  3. Step 3: Cross multiply
    216,699.60x = 324,919.80 × 111,723.60
  4. Step 4: Simplify right side
    216,699.60x = 36,301,209,767.28
  5. Step 5: Solve for x
    x = 36,301,209,767.28/216,699.60
  6. Step 6: Final answer
    x = 167,518.58

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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.