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Finding the Fourth Proportional to 476,327.20, 713,907.60 and 209,804.80

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Solution

The fourth proportional to 476,327.20, 713,907.60 and 209,804.80 is: 314,450.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,327.20 : 713,907.60 = 209,804.80 : x
  2. Step 2: Convert to fraction form
    476,327.20/713,907.60 = 209,804.80/x
  3. Step 3: Cross multiply
    476,327.20x = 713,907.60 × 209,804.80
  4. Step 4: Simplify right side
    476,327.20x = 149,781,241,236.48
  5. Step 5: Solve for x
    x = 149,781,241,236.48/476,327.20
  6. Step 6: Final answer
    x = 314,450.32

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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.