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Finding the Fourth Proportional to 324,207.60, 486,599.40 and 190,921.20

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Solution

The fourth proportional to 324,207.60, 486,599.40 and 190,921.20 is: 286,551.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,207.60 : 486,599.40 = 190,921.20 : x
  2. Step 2: Convert to fraction form
    324,207.60/486,599.40 = 190,921.20/x
  3. Step 3: Cross multiply
    324,207.60x = 486,599.40 × 190,921.20
  4. Step 4: Simplify right side
    324,207.60x = 92,902,141,367.28
  5. Step 5: Solve for x
    x = 92,902,141,367.28/324,207.60
  6. Step 6: Final answer
    x = 286,551.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.