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Finding the Fourth Proportional to 209,855.70, 314,783.55 and 168,383.70

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Solution

The fourth proportional to 209,855.70, 314,783.55 and 168,383.70 is: 252,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,855.70 : 314,783.55 = 168,383.70 : x
  2. Step 2: Convert to fraction form
    209,855.70/314,783.55 = 168,383.70/x
  3. Step 3: Cross multiply
    209,855.70x = 314,783.55 × 168,383.70
  4. Step 4: Simplify right side
    209,855.70x = 53,004,418,848.14
  5. Step 5: Solve for x
    x = 53,004,418,848.14/209,855.70
  6. Step 6: Final answer
    x = 252,575.55

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1.5x scale

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.