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Finding the Fourth Proportional to 439,433.78, 606,474.47 and 245,852.21

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Solution

The fourth proportional to 439,433.78, 606,474.47 and 245,852.21 is: 339,307.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,433.78 : 606,474.47 = 245,852.21 : x
  2. Step 2: Convert to fraction form
    439,433.78/606,474.47 = 245,852.21/x
  3. Step 3: Cross multiply
    439,433.78x = 606,474.47 × 245,852.21
  4. Step 4: Simplify right side
    439,433.78x = 149,103,090,888.90
  5. Step 5: Solve for x
    x = 149,103,090,888.90/439,433.78
  6. Step 6: Final answer
    x = 339,307.31

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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.