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Finding the Fourth Proportional to 449,622.16, 620,471.37 and 245,668.66

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Solution

The fourth proportional to 449,622.16, 620,471.37 and 245,668.66 is: 339,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,622.16 : 620,471.37 = 245,668.66 : x
  2. Step 2: Convert to fraction form
    449,622.16/620,471.37 = 245,668.66/x
  3. Step 3: Cross multiply
    449,622.16x = 620,471.37 × 245,668.66
  4. Step 4: Simplify right side
    449,622.16x = 152,430,370,036.26
  5. Step 5: Solve for x
    x = 152,430,370,036.26/449,622.16
  6. Step 6: Final answer
    x = 339,018.81

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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.