Home / 393,408.90-589,968.77-140,621.16

Finding the Fourth Proportional to 393,408.90, 589,968.77 and 140,621.16

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Solution

The fourth proportional to 393,408.90, 589,968.77 and 140,621.16 is: 210,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,408.90 : 589,968.77 = 140,621.16 : x
  2. Step 2: Convert to fraction form
    393,408.90/589,968.77 = 140,621.16/x
  3. Step 3: Cross multiply
    393,408.90x = 589,968.77 × 140,621.16
  4. Step 4: Simplify right side
    393,408.90x = 82,962,094,310.45
  5. Step 5: Solve for x
    x = 82,962,094,310.45/393,408.90
  6. Step 6: Final answer
    x = 210,880.06

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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.