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Finding the Fourth Proportional to 217,970.37, 300,825.99 and 122,475

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Solution

The fourth proportional to 217,970.37, 300,825.99 and 122,475 is: 169,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,970.37 : 300,825.99 = 122,475 : x
  2. Step 2: Convert to fraction form
    217,970.37/300,825.99 = 122,475/x
  3. Step 3: Cross multiply
    217,970.37x = 300,825.99 × 122,475
  4. Step 4: Simplify right side
    217,970.37x = 36,843,663,125.25
  5. Step 5: Solve for x
    x = 36,843,663,125.25/217,970.37
  6. Step 6: Final answer
    x = 169,030.60

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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.