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Finding the Fourth Proportional to 367,379.45, 551,075.02 and 139,678.54

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Solution

The fourth proportional to 367,379.45, 551,075.02 and 139,678.54 is: 209,520.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,379.45 : 551,075.02 = 139,678.54 : x
  2. Step 2: Convert to fraction form
    367,379.45/551,075.02 = 139,678.54/x
  3. Step 3: Cross multiply
    367,379.45x = 551,075.02 × 139,678.54
  4. Step 4: Simplify right side
    367,379.45x = 76,973,353,530.45
  5. Step 5: Solve for x
    x = 76,973,353,530.45/367,379.45
  6. Step 6: Final answer
    x = 209,520.03

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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.