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Finding the Fourth Proportional to 259,118.88, 388,383.48 and 157,693.18

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Solution

The fourth proportional to 259,118.88, 388,383.48 and 157,693.18 is: 236,360.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,118.88 : 388,383.48 = 157,693.18 : x
  2. Step 2: Convert to fraction form
    259,118.88/388,383.48 = 157,693.18/x
  3. Step 3: Cross multiply
    259,118.88x = 388,383.48 × 157,693.18
  4. Step 4: Simplify right side
    259,118.88x = 61,245,426,020.67
  5. Step 5: Solve for x
    x = 61,245,426,020.67/259,118.88
  6. Step 6: Final answer
    x = 236,360.34

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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.