Home / 388,341,110.36-535,912,558.86-212,131,550.36

Finding the Fourth Proportional to 388,341,110.36, 535,912,558.86 and 212,131,550.36

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Solution

The fourth proportional to 388,341,110.36, 535,912,558.86 and 212,131,550.36 is: 292,742,537.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,341,110.36 : 535,912,558.86 = 212,131,550.36 : x
  2. Step 2: Convert to fraction form
    388,341,110.36/535,912,558.86 = 212,131,550.36/x
  3. Step 3: Cross multiply
    388,341,110.36x = 535,912,558.86 × 212,131,550.36
  4. Step 4: Simplify right side
    388,341,110.36x = 113,683,961,968,366,560
  5. Step 5: Solve for x
    x = 113,683,961,968,366,560/388,341,110.36
  6. Step 6: Final answer
    x = 292,742,537.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.