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Finding the Fourth Proportional to 326,484.42, 489,036.70 and 206,479.64

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Solution

The fourth proportional to 326,484.42, 489,036.70 and 206,479.64 is: 309,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,484.42 : 489,036.70 = 206,479.64 : x
  2. Step 2: Convert to fraction form
    326,484.42/489,036.70 = 206,479.64/x
  3. Step 3: Cross multiply
    326,484.42x = 489,036.70 × 206,479.64
  4. Step 4: Simplify right side
    326,484.42x = 100,976,121,762.79
  5. Step 5: Solve for x
    x = 100,976,121,762.79/326,484.42
  6. Step 6: Final answer
    x = 309,283.13

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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.