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Finding the Fourth Proportional to 404,391.08, 606,679.98 and 120,075.31

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Solution

The fourth proportional to 404,391.08, 606,679.98 and 120,075.31 is: 180,140.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,391.08 : 606,679.98 = 120,075.31 : x
  2. Step 2: Convert to fraction form
    404,391.08/606,679.98 = 120,075.31/x
  3. Step 3: Cross multiply
    404,391.08x = 606,679.98 × 120,075.31
  4. Step 4: Simplify right side
    404,391.08x = 72,847,286,977.36
  5. Step 5: Solve for x
    x = 72,847,286,977.36/404,391.08
  6. Step 6: Final answer
    x = 180,140.69

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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.