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Finding the Fourth Proportional to 303,560.40, 455,632.20 and 153,969.60

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Solution

The fourth proportional to 303,560.40, 455,632.20 and 153,969.60 is: 231,102.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,560.40 : 455,632.20 = 153,969.60 : x
  2. Step 2: Convert to fraction form
    303,560.40/455,632.20 = 153,969.60/x
  3. Step 3: Cross multiply
    303,560.40x = 455,632.20 × 153,969.60
  4. Step 4: Simplify right side
    303,560.40x = 70,153,507,581.12
  5. Step 5: Solve for x
    x = 70,153,507,581.12/303,560.40
  6. Step 6: Final answer
    x = 231,102.30

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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.