Home / 342,145,539.60-513,218,309.40-321,990,147.60

Finding the Fourth Proportional to 342,145,539.60, 513,218,309.40 and 321,990,147.60

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Solution

The fourth proportional to 342,145,539.60, 513,218,309.40 and 321,990,147.60 is: 482,985,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,145,539.60 : 513,218,309.40 = 321,990,147.60 : x
  2. Step 2: Convert to fraction form
    342,145,539.60/513,218,309.40 = 321,990,147.60/x
  3. Step 3: Cross multiply
    342,145,539.60x = 513,218,309.40 × 321,990,147.60
  4. Step 4: Simplify right side
    342,145,539.60x = 165,251,239,194,728,480
  5. Step 5: Solve for x
    x = 165,251,239,194,728,480/342,145,539.60
  6. Step 6: Final answer
    x = 482,985,221.40

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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.