Home / 306,986.55-423,489.06-205,148.61

Finding the Fourth Proportional to 306,986.55, 423,489.06 and 205,148.61

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Solution

The fourth proportional to 306,986.55, 423,489.06 and 205,148.61 is: 283,003.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,986.55 : 423,489.06 = 205,148.61 : x
  2. Step 2: Convert to fraction form
    306,986.55/423,489.06 = 205,148.61/x
  3. Step 3: Cross multiply
    306,986.55x = 423,489.06 × 205,148.61
  4. Step 4: Simplify right side
    306,986.55x = 86,878,192,009.21
  5. Step 5: Solve for x
    x = 86,878,192,009.21/306,986.55
  6. Step 6: Final answer
    x = 283,003.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.