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Finding the Fourth Proportional to 247,318,700.80, 370,978,051.20 and 65,584,249.60

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Solution

The fourth proportional to 247,318,700.80, 370,978,051.20 and 65,584,249.60 is: 98,376,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,318,700.80 : 370,978,051.20 = 65,584,249.60 : x
  2. Step 2: Convert to fraction form
    247,318,700.80/370,978,051.20 = 65,584,249.60/x
  3. Step 3: Cross multiply
    247,318,700.80x = 370,978,051.20 × 65,584,249.60
  4. Step 4: Simplify right side
    247,318,700.80x = 24,330,317,106,022,380
  5. Step 5: Solve for x
    x = 24,330,317,106,022,380/247,318,700.80
  6. Step 6: Final answer
    x = 98,376,374.40

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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.