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Finding the Fourth Proportional to 389,091.96, 536,955.12 and 219,326.04

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Solution

The fourth proportional to 389,091.96, 536,955.12 and 219,326.04 is: 302,674.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,091.96 : 536,955.12 = 219,326.04 : x
  2. Step 2: Convert to fraction form
    389,091.96/536,955.12 = 219,326.04/x
  3. Step 3: Cross multiply
    389,091.96x = 536,955.12 × 219,326.04
  4. Step 4: Simplify right side
    389,091.96x = 117,768,240,127.33
  5. Step 5: Solve for x
    x = 117,768,240,127.33/389,091.96
  6. Step 6: Final answer
    x = 302,674.57

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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.