Home / 258,975,999.40-388,463,999.10-201,155,218.60

Finding the Fourth Proportional to 258,975,999.40, 388,463,999.10 and 201,155,218.60

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Solution

The fourth proportional to 258,975,999.40, 388,463,999.10 and 201,155,218.60 is: 301,732,827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,975,999.40 : 388,463,999.10 = 201,155,218.60 : x
  2. Step 2: Convert to fraction form
    258,975,999.40/388,463,999.10 = 201,155,218.60/x
  3. Step 3: Cross multiply
    258,975,999.40x = 388,463,999.10 × 201,155,218.60
  4. Step 4: Simplify right side
    258,975,999.40x = 78,141,560,657,190,704
  5. Step 5: Solve for x
    x = 78,141,560,657,190,704/258,975,999.40
  6. Step 6: Final answer
    x = 301,732,827.90

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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.