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Finding the Fourth Proportional to 355,774.80, 533,964.60 and 145,563.60

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Solution

The fourth proportional to 355,774.80, 533,964.60 and 145,563.60 is: 218,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,774.80 : 533,964.60 = 145,563.60 : x
  2. Step 2: Convert to fraction form
    355,774.80/533,964.60 = 145,563.60/x
  3. Step 3: Cross multiply
    355,774.80x = 533,964.60 × 145,563.60
  4. Step 4: Simplify right side
    355,774.80x = 77,725,809,448.56
  5. Step 5: Solve for x
    x = 77,725,809,448.56/355,774.80
  6. Step 6: Final answer
    x = 218,469.13

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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.