Home / 485,424,140.80-728,136,211.20-162,308,012.80

Finding the Fourth Proportional to 485,424,140.80, 728,136,211.20 and 162,308,012.80

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Solution

The fourth proportional to 485,424,140.80, 728,136,211.20 and 162,308,012.80 is: 243,462,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,424,140.80 : 728,136,211.20 = 162,308,012.80 : x
  2. Step 2: Convert to fraction form
    485,424,140.80/728,136,211.20 = 162,308,012.80/x
  3. Step 3: Cross multiply
    485,424,140.80x = 728,136,211.20 × 162,308,012.80
  4. Step 4: Simplify right side
    485,424,140.80x = 118,182,341,487,593,120
  5. Step 5: Solve for x
    x = 118,182,341,487,593,120/485,424,140.80
  6. Step 6: Final answer
    x = 243,462,019.20

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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.