Home / 258,780,678,202.16-388,190,534,551.32-77,249,178,204.56

Finding the Fourth Proportional to 258,780,678,202.16, 388,190,534,551.32 and 77,249,178,204.56

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Solution

The fourth proportional to 258,780,678,202.16, 388,190,534,551.32 and 77,249,178,204.56 is: 115,879,593,442.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,780,678,202.16 : 388,190,534,551.32 = 77,249,178,204.56 : x
  2. Step 2: Convert to fraction form
    258,780,678,202.16/388,190,534,551.32 = 77,249,178,204.56/x
  3. Step 3: Cross multiply
    258,780,678,202.16x = 388,190,534,551.32 × 77,249,178,204.56
  4. Step 4: Simplify right side
    258,780,678,202.16x = 29,987,399,780,878,325,383,168
  5. Step 5: Solve for x
    x = 29,987,399,780,878,325,383,168/258,780,678,202.16
  6. Step 6: Final answer
    x = 115,879,593,442.65

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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.