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Finding the Fourth Proportional to 421,283.77, 581,375.47 and 239,993.01

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Solution

The fourth proportional to 421,283.77, 581,375.47 and 239,993.01 is: 331,192.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,283.77 : 581,375.47 = 239,993.01 : x
  2. Step 2: Convert to fraction form
    421,283.77/581,375.47 = 239,993.01/x
  3. Step 3: Cross multiply
    421,283.77x = 581,375.47 × 239,993.01
  4. Step 4: Simplify right side
    421,283.77x = 139,526,048,385.48
  5. Step 5: Solve for x
    x = 139,526,048,385.48/421,283.77
  6. Step 6: Final answer
    x = 331,192.56

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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.