Home / 328,536,420.80-492,804,631.20-199,289,969.60

Finding the Fourth Proportional to 328,536,420.80, 492,804,631.20 and 199,289,969.60

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Solution

The fourth proportional to 328,536,420.80, 492,804,631.20 and 199,289,969.60 is: 298,934,954.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,536,420.80 : 492,804,631.20 = 199,289,969.60 : x
  2. Step 2: Convert to fraction form
    328,536,420.80/492,804,631.20 = 199,289,969.60/x
  3. Step 3: Cross multiply
    328,536,420.80x = 492,804,631.20 × 199,289,969.60
  4. Step 4: Simplify right side
    328,536,420.80x = 98,211,019,970,587,200
  5. Step 5: Solve for x
    x = 98,211,019,970,587,200/328,536,420.80
  6. Step 6: Final answer
    x = 298,934,954.40

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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.