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Finding the Fourth Proportional to 324,639.83, 486,959.74 and 205,065.60

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Solution

The fourth proportional to 324,639.83, 486,959.74 and 205,065.60 is: 307,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,639.83 : 486,959.74 = 205,065.60 : x
  2. Step 2: Convert to fraction form
    324,639.83/486,959.74 = 205,065.60/x
  3. Step 3: Cross multiply
    324,639.83x = 486,959.74 × 205,065.60
  4. Step 4: Simplify right side
    324,639.83x = 99,858,690,746.28
  5. Step 5: Solve for x
    x = 99,858,690,746.28/324,639.83
  6. Step 6: Final answer
    x = 307,598.40

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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.