Home / 320,783.13-442,605.49-219,020.51

Finding the Fourth Proportional to 320,783.13, 442,605.49 and 219,020.51

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Solution

The fourth proportional to 320,783.13, 442,605.49 and 219,020.51 is: 302,196.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,783.13 : 442,605.49 = 219,020.51 : x
  2. Step 2: Convert to fraction form
    320,783.13/442,605.49 = 219,020.51/x
  3. Step 3: Cross multiply
    320,783.13x = 442,605.49 × 219,020.51
  4. Step 4: Simplify right side
    320,783.13x = 96,939,680,707.56
  5. Step 5: Solve for x
    x = 96,939,680,707.56/320,783.13
  6. Step 6: Final answer
    x = 302,196.94

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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.