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Finding the Fourth Proportional to 201,210.40, 301,623.60 and 74,816.80

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Solution

The fourth proportional to 201,210.40, 301,623.60 and 74,816.80 is: 112,153.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,210.40 : 301,623.60 = 74,816.80 : x
  2. Step 2: Convert to fraction form
    201,210.40/301,623.60 = 74,816.80/x
  3. Step 3: Cross multiply
    201,210.40x = 301,623.60 × 74,816.80
  4. Step 4: Simplify right side
    201,210.40x = 22,566,512,556.48
  5. Step 5: Solve for x
    x = 22,566,512,556.48/201,210.40
  6. Step 6: Final answer
    x = 112,153.81

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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.