Home / 399,013.07-598,513.66-185,661.50

Finding the Fourth Proportional to 399,013.07, 598,513.66 and 185,661.50

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Solution

The fourth proportional to 399,013.07, 598,513.66 and 185,661.50 is: 278,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,013.07 : 598,513.66 = 185,661.50 : x
  2. Step 2: Convert to fraction form
    399,013.07/598,513.66 = 185,661.50/x
  3. Step 3: Cross multiply
    399,013.07x = 598,513.66 × 185,661.50
  4. Step 4: Simplify right side
    399,013.07x = 111,120,943,886.09
  5. Step 5: Solve for x
    x = 111,120,943,886.09/399,013.07
  6. Step 6: Final answer
    x = 278,489.48

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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.