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Finding the Fourth Proportional to 370,645.80, 555,963.84 and 90,163.32

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Solution

The fourth proportional to 370,645.80, 555,963.84 and 90,163.32 is: 135,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,645.80 : 555,963.84 = 90,163.32 : x
  2. Step 2: Convert to fraction form
    370,645.80/555,963.84 = 90,163.32/x
  3. Step 3: Cross multiply
    370,645.80x = 555,963.84 × 90,163.32
  4. Step 4: Simplify right side
    370,645.80x = 50,127,545,614.35
  5. Step 5: Solve for x
    x = 50,127,545,614.35/370,645.80
  6. Step 6: Final answer
    x = 135,243.80

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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.