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Finding the Fourth Proportional to 624,243.19, 936,406.31 and 219,386.43

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Solution

The fourth proportional to 624,243.19, 936,406.31 and 219,386.43 is: 329,094.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,243.19 : 936,406.31 = 219,386.43 : x
  2. Step 2: Convert to fraction form
    624,243.19/936,406.31 = 219,386.43/x
  3. Step 3: Cross multiply
    624,243.19x = 936,406.31 × 219,386.43
  4. Step 4: Simplify right side
    624,243.19x = 205,434,837,380.37
  5. Step 5: Solve for x
    x = 205,434,837,380.37/624,243.19
  6. Step 6: Final answer
    x = 329,094.24

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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.