Home / 306,028.06-459,041.18-81,388.30

Finding the Fourth Proportional to 306,028.06, 459,041.18 and 81,388.30

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Solution

The fourth proportional to 306,028.06, 459,041.18 and 81,388.30 is: 122,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,028.06 : 459,041.18 = 81,388.30 : x
  2. Step 2: Convert to fraction form
    306,028.06/459,041.18 = 81,388.30/x
  3. Step 3: Cross multiply
    306,028.06x = 459,041.18 × 81,388.30
  4. Step 4: Simplify right side
    306,028.06x = 37,360,581,270.19
  5. Step 5: Solve for x
    x = 37,360,581,270.19/306,028.06
  6. Step 6: Final answer
    x = 122,082.21

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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.