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Finding the Fourth Proportional to 380,965.91, 525,658.82 and 225,888.48

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Solution

The fourth proportional to 380,965.91, 525,658.82 and 225,888.48 is: 311,682.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,965.91 : 525,658.82 = 225,888.48 : x
  2. Step 2: Convert to fraction form
    380,965.91/525,658.82 = 225,888.48/x
  3. Step 3: Cross multiply
    380,965.91x = 525,658.82 × 225,888.48
  4. Step 4: Simplify right side
    380,965.91x = 118,740,270,718.95
  5. Step 5: Solve for x
    x = 118,740,270,718.95/380,965.91
  6. Step 6: Final answer
    x = 311,682.15

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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.