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Finding the Fourth Proportional to 445,402.54, 668,198.28 and 145,860.98

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Solution

The fourth proportional to 445,402.54, 668,198.28 and 145,860.98 is: 218,822.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,402.54 : 668,198.28 = 145,860.98 : x
  2. Step 2: Convert to fraction form
    445,402.54/668,198.28 = 145,860.98/x
  3. Step 3: Cross multiply
    445,402.54x = 668,198.28 × 145,860.98
  4. Step 4: Simplify right side
    445,402.54x = 97,464,055,955.11
  5. Step 5: Solve for x
    x = 97,464,055,955.11/445,402.54
  6. Step 6: Final answer
    x = 218,822.41

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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.