Home / 393,071.12-589,637.46-140,406.20

Finding the Fourth Proportional to 393,071.12, 589,637.46 and 140,406.20

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Solution

The fourth proportional to 393,071.12, 589,637.46 and 140,406.20 is: 210,620.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,071.12 : 589,637.46 = 140,406.20 : x
  2. Step 2: Convert to fraction form
    393,071.12/589,637.46 = 140,406.20/x
  3. Step 3: Cross multiply
    393,071.12x = 589,637.46 × 140,406.20
  4. Step 4: Simplify right side
    393,071.12x = 82,788,755,136.25
  5. Step 5: Solve for x
    x = 82,788,755,136.25/393,071.12
  6. Step 6: Final answer
    x = 210,620.29

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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.