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Finding the Fourth Proportional to 217,897.56, 300,698.81 and 122,404.32

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Solution

The fourth proportional to 217,897.56, 300,698.81 and 122,404.32 is: 168,918.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,897.56 : 300,698.81 = 122,404.32 : x
  2. Step 2: Convert to fraction form
    217,897.56/300,698.81 = 122,404.32/x
  3. Step 3: Cross multiply
    217,897.56x = 300,698.81 × 122,404.32
  4. Step 4: Simplify right side
    217,897.56x = 36,806,832,750.84
  5. Step 5: Solve for x
    x = 36,806,832,750.84/217,897.56
  6. Step 6: Final answer
    x = 168,918.06

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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.