Home / 328,536,439.80-492,804,659.70-199,289,988.60

Finding the Fourth Proportional to 328,536,439.80, 492,804,659.70 and 199,289,988.60

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Solution

The fourth proportional to 328,536,439.80, 492,804,659.70 and 199,289,988.60 is: 298,934,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,536,439.80 : 492,804,659.70 = 199,289,988.60 : x
  2. Step 2: Convert to fraction form
    328,536,439.80/492,804,659.70 = 199,289,988.60/x
  3. Step 3: Cross multiply
    328,536,439.80x = 492,804,659.70 × 199,289,988.60
  4. Step 4: Simplify right side
    328,536,439.80x = 98,211,035,013,639,872
  5. Step 5: Solve for x
    x = 98,211,035,013,639,872/328,536,439.80
  6. Step 6: Final answer
    x = 298,934,982.90

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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.