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Finding the Fourth Proportional to 270,163.56, 372,815.63 and 155,459.91

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Solution

The fourth proportional to 270,163.56, 372,815.63 and 155,459.91 is: 214,528.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,163.56 : 372,815.63 = 155,459.91 : x
  2. Step 2: Convert to fraction form
    270,163.56/372,815.63 = 155,459.91/x
  3. Step 3: Cross multiply
    270,163.56x = 372,815.63 × 155,459.91
  4. Step 4: Simplify right side
    270,163.56x = 57,957,883,509.09
  5. Step 5: Solve for x
    x = 57,957,883,509.09/270,163.56
  6. Step 6: Final answer
    x = 214,528.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.