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Finding the Fourth Proportional to 290,467.10, 405,824.50 and 290,467.10

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Solution

The fourth proportional to 290,467.10, 405,824.50 and 290,467.10 is: 405,824.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,467.10 : 405,824.50 = 290,467.10 : x
  2. Step 2: Convert to fraction form
    290,467.10/405,824.50 = 290,467.10/x
  3. Step 3: Cross multiply
    290,467.10x = 405,824.50 × 290,467.10
  4. Step 4: Simplify right side
    290,467.10x = 117,878,665,623.95
  5. Step 5: Solve for x
    x = 117,878,665,623.95/290,467.10
  6. Step 6: Final answer
    x = 405,824.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.