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Finding the Fourth Proportional to 216,039.60, 324,059.40 and 136,323.45

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Solution

The fourth proportional to 216,039.60, 324,059.40 and 136,323.45 is: 204,485.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,039.60 : 324,059.40 = 136,323.45 : x
  2. Step 2: Convert to fraction form
    216,039.60/324,059.40 = 136,323.45/x
  3. Step 3: Cross multiply
    216,039.60x = 324,059.40 × 136,323.45
  4. Step 4: Simplify right side
    216,039.60x = 44,176,895,412.93
  5. Step 5: Solve for x
    x = 44,176,895,412.93/216,039.60
  6. Step 6: Final answer
    x = 204,485.18

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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.