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Finding the Fourth Proportional to 290,466.40, 436,671.60 and 251,975.20

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Solution

The fourth proportional to 290,466.40, 436,671.60 and 251,975.20 is: 378,806.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,466.40 : 436,671.60 = 251,975.20 : x
  2. Step 2: Convert to fraction form
    290,466.40/436,671.60 = 251,975.20/x
  3. Step 3: Cross multiply
    290,466.40x = 436,671.60 × 251,975.20
  4. Step 4: Simplify right side
    290,466.40x = 110,030,413,744.32
  5. Step 5: Solve for x
    x = 110,030,413,744.32/290,466.40
  6. Step 6: Final answer
    x = 378,806.00

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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.