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Finding the Fourth Proportional to 211,858.62, 317,783.07 and 106,649.34

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Solution

The fourth proportional to 211,858.62, 317,783.07 and 106,649.34 is: 159,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,858.62 : 317,783.07 = 106,649.34 : x
  2. Step 2: Convert to fraction form
    211,858.62/317,783.07 = 106,649.34/x
  3. Step 3: Cross multiply
    211,858.62x = 317,783.07 × 106,649.34
  4. Step 4: Simplify right side
    211,858.62x = 33,891,354,678.67
  5. Step 5: Solve for x
    x = 33,891,354,678.67/211,858.62
  6. Step 6: Final answer
    x = 159,971.56

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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.