Home / 258,760.45-388,009.35-118,398.79

Finding the Fourth Proportional to 258,760.45, 388,009.35 and 118,398.79

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Solution

The fourth proportional to 258,760.45, 388,009.35 and 118,398.79 is: 177,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,760.45 : 388,009.35 = 118,398.79 : x
  2. Step 2: Convert to fraction form
    258,760.45/388,009.35 = 118,398.79/x
  3. Step 3: Cross multiply
    258,760.45x = 388,009.35 × 118,398.79
  4. Step 4: Simplify right side
    258,760.45x = 45,939,837,548.69
  5. Step 5: Solve for x
    x = 45,939,837,548.69/258,760.45
  6. Step 6: Final answer
    x = 177,538.10

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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.