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Finding the Fourth Proportional to 326,538.48, 489,794.94 and 89,874.69

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Solution

The fourth proportional to 326,538.48, 489,794.94 and 89,874.69 is: 134,808.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,538.48 : 489,794.94 = 89,874.69 : x
  2. Step 2: Convert to fraction form
    326,538.48/489,794.94 = 89,874.69/x
  3. Step 3: Cross multiply
    326,538.48x = 489,794.94 × 89,874.69
  4. Step 4: Simplify right side
    326,538.48x = 44,020,168,396.07
  5. Step 5: Solve for x
    x = 44,020,168,396.07/326,538.48
  6. Step 6: Final answer
    x = 134,808.52

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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.