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Finding the Fourth Proportional to 326,256.55, 489,383.91 and 89,599.45

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Solution

The fourth proportional to 326,256.55, 489,383.91 and 89,599.45 is: 134,398.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,256.55 : 489,383.91 = 89,599.45 : x
  2. Step 2: Convert to fraction form
    326,256.55/489,383.91 = 89,599.45/x
  3. Step 3: Cross multiply
    326,256.55x = 489,383.91 × 89,599.45
  4. Step 4: Simplify right side
    326,256.55x = 43,848,529,174.85
  5. Step 5: Solve for x
    x = 43,848,529,174.85/326,256.55
  6. Step 6: Final answer
    x = 134,398.92

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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.