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Finding the Fourth Proportional to 336,868,052.40, 505,302,078.60 and 287,550,327.60

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Solution

The fourth proportional to 336,868,052.40, 505,302,078.60 and 287,550,327.60 is: 431,325,491.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,868,052.40 : 505,302,078.60 = 287,550,327.60 : x
  2. Step 2: Convert to fraction form
    336,868,052.40/505,302,078.60 = 287,550,327.60/x
  3. Step 3: Cross multiply
    336,868,052.40x = 505,302,078.60 × 287,550,327.60
  4. Step 4: Simplify right side
    336,868,052.40x = 145,299,778,238,390,976
  5. Step 5: Solve for x
    x = 145,299,778,238,390,976/336,868,052.40
  6. Step 6: Final answer
    x = 431,325,491.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.