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Finding the Fourth Proportional to 324,380.80, 447,856.14 and 290,330.32

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Solution

The fourth proportional to 324,380.80, 447,856.14 and 290,330.32 is: 400,844.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,380.80 : 447,856.14 = 290,330.32 : x
  2. Step 2: Convert to fraction form
    324,380.80/447,856.14 = 290,330.32/x
  3. Step 3: Cross multiply
    324,380.80x = 447,856.14 × 290,330.32
  4. Step 4: Simplify right side
    324,380.80x = 130,026,216,440.17
  5. Step 5: Solve for x
    x = 130,026,216,440.17/324,380.80
  6. Step 6: Final answer
    x = 400,844.37

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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.