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Finding the Fourth Proportional to 395,987.46, 594,040.46 and 143,327.07

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Solution

The fourth proportional to 395,987.46, 594,040.46 and 143,327.07 is: 215,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,987.46 : 594,040.46 = 143,327.07 : x
  2. Step 2: Convert to fraction form
    395,987.46/594,040.46 = 143,327.07/x
  3. Step 3: Cross multiply
    395,987.46x = 594,040.46 × 143,327.07
  4. Step 4: Simplify right side
    395,987.46x = 85,142,075,623.05
  5. Step 5: Solve for x
    x = 85,142,075,623.05/395,987.46
  6. Step 6: Final answer
    x = 215,012.05

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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.