Home / 485,424,143.80-728,136,215.70-162,308,015.80

Finding the Fourth Proportional to 485,424,143.80, 728,136,215.70 and 162,308,015.80

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Solution

The fourth proportional to 485,424,143.80, 728,136,215.70 and 162,308,015.80 is: 243,462,023.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,424,143.80 : 728,136,215.70 = 162,308,015.80 : x
  2. Step 2: Convert to fraction form
    485,424,143.80/728,136,215.70 = 162,308,015.80/x
  3. Step 3: Cross multiply
    485,424,143.80x = 728,136,215.70 × 162,308,015.80
  4. Step 4: Simplify right side
    485,424,143.80x = 118,182,344,402,387,824
  5. Step 5: Solve for x
    x = 118,182,344,402,387,824/485,424,143.80
  6. Step 6: Final answer
    x = 243,462,023.70

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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.