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Finding the Fourth Proportional to 367,379.83, 551,075.58 and 139,678.92

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Solution

The fourth proportional to 367,379.83, 551,075.58 and 139,678.92 is: 209,520.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,379.83 : 551,075.58 = 139,678.92 : x
  2. Step 2: Convert to fraction form
    367,379.83/551,075.58 = 139,678.92/x
  3. Step 3: Cross multiply
    367,379.83x = 551,075.58 × 139,678.92
  4. Step 4: Simplify right side
    367,379.83x = 76,973,639,786.24
  5. Step 5: Solve for x
    x = 76,973,639,786.24/367,379.83
  6. Step 6: Final answer
    x = 209,520.59

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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.