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Finding the Fourth Proportional to 449,647.22, 620,505.81 and 245,693.67

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Solution

The fourth proportional to 449,647.22, 620,505.81 and 245,693.67 is: 339,053.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,647.22 : 620,505.81 = 245,693.67 : x
  2. Step 2: Convert to fraction form
    449,647.22/620,505.81 = 245,693.67/x
  3. Step 3: Cross multiply
    449,647.22x = 620,505.81 × 245,693.67
  4. Step 4: Simplify right side
    449,647.22x = 152,454,349,715.22
  5. Step 5: Solve for x
    x = 152,454,349,715.22/449,647.22
  6. Step 6: Final answer
    x = 339,053.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.