Home / 393,039.23-589,529.69-140,290.88

Finding the Fourth Proportional to 393,039.23, 589,529.69 and 140,290.88

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Solution

The fourth proportional to 393,039.23, 589,529.69 and 140,290.88 is: 210,425.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,039.23 : 589,529.69 = 140,290.88 : x
  2. Step 2: Convert to fraction form
    393,039.23/589,529.69 = 140,290.88/x
  3. Step 3: Cross multiply
    393,039.23x = 589,529.69 × 140,290.88
  4. Step 4: Simplify right side
    393,039.23x = 82,705,638,294.77
  5. Step 5: Solve for x
    x = 82,705,638,294.77/393,039.23
  6. Step 6: Final answer
    x = 210,425.91

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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.