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Finding the Fourth Proportional to 393,649,643.60, 590,474,465.40 and 163,542,251.60

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Solution

The fourth proportional to 393,649,643.60, 590,474,465.40 and 163,542,251.60 is: 245,313,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,649,643.60 : 590,474,465.40 = 163,542,251.60 : x
  2. Step 2: Convert to fraction form
    393,649,643.60/590,474,465.40 = 163,542,251.60/x
  3. Step 3: Cross multiply
    393,649,643.60x = 590,474,465.40 × 163,542,251.60
  4. Step 4: Simplify right side
    393,649,643.60x = 96,567,523,583,822,288
  5. Step 5: Solve for x
    x = 96,567,523,583,822,288/393,649,643.60
  6. Step 6: Final answer
    x = 245,313,377.40

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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.