Home / 320,715.23-442,556.96-191,628

Finding the Fourth Proportional to 320,715.23, 442,556.96 and 191,628

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Solution

The fourth proportional to 320,715.23, 442,556.96 and 191,628 is: 264,428.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,715.23 : 442,556.96 = 191,628 : x
  2. Step 2: Convert to fraction form
    320,715.23/442,556.96 = 191,628/x
  3. Step 3: Cross multiply
    320,715.23x = 442,556.96 × 191,628
  4. Step 4: Simplify right side
    320,715.23x = 84,806,304,172.74
  5. Step 5: Solve for x
    x = 84,806,304,172.74/320,715.23
  6. Step 6: Final answer
    x = 264,428.68

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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.