Home / 258,731.01-388,161.09-90,253.74

Finding the Fourth Proportional to 258,731.01, 388,161.09 and 90,253.74

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Solution

The fourth proportional to 258,731.01, 388,161.09 and 90,253.74 is: 135,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,731.01 : 388,161.09 = 90,253.74 : x
  2. Step 2: Convert to fraction form
    258,731.01/388,161.09 = 90,253.74/x
  3. Step 3: Cross multiply
    258,731.01x = 388,161.09 × 90,253.74
  4. Step 4: Simplify right side
    258,731.01x = 35,032,990,094.98
  5. Step 5: Solve for x
    x = 35,032,990,094.98/258,731.01
  6. Step 6: Final answer
    x = 135,403.14

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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.