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Finding the Fourth Proportional to 370,399.88, 555,344.50 and 145,786.10

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Solution

The fourth proportional to 370,399.88, 555,344.50 and 145,786.10 is: 218,578.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,399.88 : 555,344.50 = 145,786.10 : x
  2. Step 2: Convert to fraction form
    370,399.88/555,344.50 = 145,786.10/x
  3. Step 3: Cross multiply
    370,399.88x = 555,344.50 × 145,786.10
  4. Step 4: Simplify right side
    370,399.88x = 80,961,508,811.45
  5. Step 5: Solve for x
    x = 80,961,508,811.45/370,399.88
  6. Step 6: Final answer
    x = 218,578.66

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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.