Home / 318,985.34-440,383.04-211,700.84

Finding the Fourth Proportional to 318,985.34, 440,383.04 and 211,700.84

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Solution

The fourth proportional to 318,985.34, 440,383.04 and 211,700.84 is: 292,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,985.34 : 440,383.04 = 211,700.84 : x
  2. Step 2: Convert to fraction form
    318,985.34/440,383.04 = 211,700.84/x
  3. Step 3: Cross multiply
    318,985.34x = 440,383.04 × 211,700.84
  4. Step 4: Simplify right side
    318,985.34x = 93,229,456,229.33
  5. Step 5: Solve for x
    x = 93,229,456,229.33/318,985.34
  6. Step 6: Final answer
    x = 292,268.78

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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.