Home / 485,424,138.80-728,136,208.20-162,308,010.80

Finding the Fourth Proportional to 485,424,138.80, 728,136,208.20 and 162,308,010.80

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Solution

The fourth proportional to 485,424,138.80, 728,136,208.20 and 162,308,010.80 is: 243,462,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,424,138.80 : 728,136,208.20 = 162,308,010.80 : x
  2. Step 2: Convert to fraction form
    485,424,138.80/728,136,208.20 = 162,308,010.80/x
  3. Step 3: Cross multiply
    485,424,138.80x = 728,136,208.20 × 162,308,010.80
  4. Step 4: Simplify right side
    485,424,138.80x = 118,182,339,544,396,672
  5. Step 5: Solve for x
    x = 118,182,339,544,396,672/485,424,138.80
  6. Step 6: Final answer
    x = 243,462,016.20

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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.