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Finding the Fourth Proportional to 380,862.44, 525,581.22 and 219,717.80

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Solution

The fourth proportional to 380,862.44, 525,581.22 and 219,717.80 is: 303,205.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,862.44 : 525,581.22 = 219,717.80 : x
  2. Step 2: Convert to fraction form
    380,862.44/525,581.22 = 219,717.80/x
  3. Step 3: Cross multiply
    380,862.44x = 525,581.22 × 219,717.80
  4. Step 4: Simplify right side
    380,862.44x = 115,479,549,379.72
  5. Step 5: Solve for x
    x = 115,479,549,379.72/380,862.44
  6. Step 6: Final answer
    x = 303,205.40

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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.