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Finding the Fourth Proportional to 326,668.74, 489,007.98 and 262,895.82

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Solution

The fourth proportional to 326,668.74, 489,007.98 and 262,895.82 is: 393,542.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,668.74 : 489,007.98 = 262,895.82 : x
  2. Step 2: Convert to fraction form
    326,668.74/489,007.98 = 262,895.82/x
  3. Step 3: Cross multiply
    326,668.74x = 489,007.98 × 262,895.82
  4. Step 4: Simplify right side
    326,668.74x = 128,558,153,888.64
  5. Step 5: Solve for x
    x = 128,558,153,888.64/326,668.74
  6. Step 6: Final answer
    x = 393,542.87

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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.