Home / 318,810.94-439,827.03-189,723.54

Finding the Fourth Proportional to 318,810.94, 439,827.03 and 189,723.54

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Solution

The fourth proportional to 318,810.94, 439,827.03 and 189,723.54 is: 261,739.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,810.94 : 439,827.03 = 189,723.54 : x
  2. Step 2: Convert to fraction form
    318,810.94/439,827.03 = 189,723.54/x
  3. Step 3: Cross multiply
    318,810.94x = 439,827.03 × 189,723.54
  4. Step 4: Simplify right side
    318,810.94x = 83,445,541,119.29
  5. Step 5: Solve for x
    x = 83,445,541,119.29/318,810.94
  6. Step 6: Final answer
    x = 261,739.89

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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.