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Finding the Fourth Proportional to 439,907.06, 659,888.54 and 124,388.57

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Solution

The fourth proportional to 439,907.06, 659,888.54 and 124,388.57 is: 186,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,907.06 : 659,888.54 = 124,388.57 : x
  2. Step 2: Convert to fraction form
    439,907.06/659,888.54 = 124,388.57/x
  3. Step 3: Cross multiply
    439,907.06x = 659,888.54 × 124,388.57
  4. Step 4: Simplify right side
    439,907.06x = 82,082,593,344.22
  5. Step 5: Solve for x
    x = 82,082,593,344.22/439,907.06
  6. Step 6: Final answer
    x = 186,590.76

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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.