Home / 328,537,739.80-492,806,609.70-199,291,288.60

Finding the Fourth Proportional to 328,537,739.80, 492,806,609.70 and 199,291,288.60

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Solution

The fourth proportional to 328,537,739.80, 492,806,609.70 and 199,291,288.60 is: 298,936,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,537,739.80 : 492,806,609.70 = 199,291,288.60 : x
  2. Step 2: Convert to fraction form
    328,537,739.80/492,806,609.70 = 199,291,288.60/x
  3. Step 3: Cross multiply
    328,537,739.80x = 492,806,609.70 × 199,291,288.60
  4. Step 4: Simplify right side
    328,537,739.80x = 98,212,064,277,710,256
  5. Step 5: Solve for x
    x = 98,212,064,277,710,256/328,537,739.80
  6. Step 6: Final answer
    x = 298,936,932.90

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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.