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Finding the Fourth Proportional to 265,986.75, 399,055.13 and 108,328.35

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Solution

The fourth proportional to 265,986.75, 399,055.13 and 108,328.35 is: 162,523.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,986.75 : 399,055.13 = 108,328.35 : x
  2. Step 2: Convert to fraction form
    265,986.75/399,055.13 = 108,328.35/x
  3. Step 3: Cross multiply
    265,986.75x = 399,055.13 × 108,328.35
  4. Step 4: Simplify right side
    265,986.75x = 43,228,983,250.29
  5. Step 5: Solve for x
    x = 43,228,983,250.29/265,986.75
  6. Step 6: Final answer
    x = 162,523.07

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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.