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Finding the Fourth Proportional to 245,401.38, 368,101.79 and 79,189.38

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Solution

The fourth proportional to 245,401.38, 368,101.79 and 79,189.38 is: 118,783.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,401.38 : 368,101.79 = 79,189.38 : x
  2. Step 2: Convert to fraction form
    245,401.38/368,101.79 = 79,189.38/x
  3. Step 3: Cross multiply
    245,401.38x = 368,101.79 × 79,189.38
  4. Step 4: Simplify right side
    245,401.38x = 29,149,752,526.99
  5. Step 5: Solve for x
    x = 29,149,752,526.99/245,401.38
  6. Step 6: Final answer
    x = 118,783.98

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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.