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Finding the Fourth Proportional to 355,983.40, 534,171.66 and 145,768.60

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Solution

The fourth proportional to 355,983.40, 534,171.66 and 145,768.60 is: 218,733.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,983.40 : 534,171.66 = 145,768.60 : x
  2. Step 2: Convert to fraction form
    355,983.40/534,171.66 = 145,768.60/x
  3. Step 3: Cross multiply
    355,983.40x = 534,171.66 × 145,768.60
  4. Step 4: Simplify right side
    355,983.40x = 77,865,455,037.88
  5. Step 5: Solve for x
    x = 77,865,455,037.88/355,983.40
  6. Step 6: Final answer
    x = 218,733.39

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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.