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Finding the Fourth Proportional to 290,381.28, 435,649.59 and 262,620.96

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Solution

The fourth proportional to 290,381.28, 435,649.59 and 262,620.96 is: 394,001.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,381.28 : 435,649.59 = 262,620.96 : x
  2. Step 2: Convert to fraction form
    290,381.28/435,649.59 = 262,620.96/x
  3. Step 3: Cross multiply
    290,381.28x = 435,649.59 × 262,620.96
  4. Step 4: Simplify right side
    290,381.28x = 114,410,713,549.41
  5. Step 5: Solve for x
    x = 114,410,713,549.41/290,381.28
  6. Step 6: Final answer
    x = 394,001.68

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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.