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Finding the Fourth Proportional to 217,914.77, 300,706.21 and 122,437.37

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Solution

The fourth proportional to 217,914.77, 300,706.21 and 122,437.37 is: 168,954.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,914.77 : 300,706.21 = 122,437.37 : x
  2. Step 2: Convert to fraction form
    217,914.77/300,706.21 = 122,437.37/x
  3. Step 3: Cross multiply
    217,914.77x = 300,706.21 × 122,437.37
  4. Step 4: Simplify right side
    217,914.77x = 36,817,677,495.07
  5. Step 5: Solve for x
    x = 36,817,677,495.07/217,914.77
  6. Step 6: Final answer
    x = 168,954.48

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1.5x scale

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.