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Finding the Fourth Proportional to 548,687.51, 757,218.17 and 306,955.67

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Solution

The fourth proportional to 548,687.51, 757,218.17 and 306,955.67 is: 423,615.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,687.51 : 757,218.17 = 306,955.67 : x
  2. Step 2: Convert to fraction form
    548,687.51/757,218.17 = 306,955.67/x
  3. Step 3: Cross multiply
    548,687.51x = 757,218.17 × 306,955.67
  4. Step 4: Simplify right side
    548,687.51x = 232,432,405,387.66
  5. Step 5: Solve for x
    x = 232,432,405,387.66/548,687.51
  6. Step 6: Final answer
    x = 423,615.27

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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.