Home / 258,975,345.40-388,463,018.10-201,154,564.60

Finding the Fourth Proportional to 258,975,345.40, 388,463,018.10 and 201,154,564.60

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Solution

The fourth proportional to 258,975,345.40, 388,463,018.10 and 201,154,564.60 is: 301,731,846.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,975,345.40 : 388,463,018.10 = 201,154,564.60 : x
  2. Step 2: Convert to fraction form
    258,975,345.40/388,463,018.10 = 201,154,564.60/x
  3. Step 3: Cross multiply
    258,975,345.40x = 388,463,018.10 × 201,154,564.60
  4. Step 4: Simplify right side
    258,975,345.40x = 78,141,109,269,107,424
  5. Step 5: Solve for x
    x = 78,141,109,269,107,424/258,975,345.40
  6. Step 6: Final answer
    x = 301,731,846.90

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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.