Home / 330,983.82-456,687.99-216,430.38

Finding the Fourth Proportional to 330,983.82, 456,687.99 and 216,430.38

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Solution

The fourth proportional to 330,983.82, 456,687.99 and 216,430.38 is: 298,628.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,983.82 : 456,687.99 = 216,430.38 : x
  2. Step 2: Convert to fraction form
    330,983.82/456,687.99 = 216,430.38/x
  3. Step 3: Cross multiply
    330,983.82x = 456,687.99 × 216,430.38
  4. Step 4: Simplify right side
    330,983.82x = 98,841,155,217.14
  5. Step 5: Solve for x
    x = 98,841,155,217.14/330,983.82
  6. Step 6: Final answer
    x = 298,628.36

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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.