Home / 259,090,420.80-388,679,176.80-77,355,969.60

Finding the Fourth Proportional to 259,090,420.80, 388,679,176.80 and 77,355,969.60

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Solution

The fourth proportional to 259,090,420.80, 388,679,176.80 and 77,355,969.60 is: 116,046,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,090,420.80 : 388,679,176.80 = 77,355,969.60 : x
  2. Step 2: Convert to fraction form
    259,090,420.80/388,679,176.80 = 77,355,969.60/x
  3. Step 3: Cross multiply
    259,090,420.80x = 388,679,176.80 × 77,355,969.60
  4. Step 4: Simplify right side
    259,090,420.80x = 30,066,654,584,693,824
  5. Step 5: Solve for x
    x = 30,066,654,584,693,824/259,090,420.80
  6. Step 6: Final answer
    x = 116,046,955.70

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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.