Home / 258,780,678,200.16-388,190,534,548.32-77,249,178,202.56

Finding the Fourth Proportional to 258,780,678,200.16, 388,190,534,548.32 and 77,249,178,202.56

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Solution

The fourth proportional to 258,780,678,200.16, 388,190,534,548.32 and 77,249,178,202.56 is: 115,879,593,439.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,780,678,200.16 : 388,190,534,548.32 = 77,249,178,202.56 : x
  2. Step 2: Convert to fraction form
    258,780,678,200.16/388,190,534,548.32 = 77,249,178,202.56/x
  3. Step 3: Cross multiply
    258,780,678,200.16x = 388,190,534,548.32 × 77,249,178,202.56
  4. Step 4: Simplify right side
    258,780,678,200.16x = 29,987,399,779,870,195,056,640
  5. Step 5: Solve for x
    x = 29,987,399,779,870,195,056,640/258,780,678,200.16
  6. Step 6: Final answer
    x = 115,879,593,439.65

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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.