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Finding the Fourth Proportional to 326,257.05, 489,384.66 and 89,599.95

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Solution

The fourth proportional to 326,257.05, 489,384.66 and 89,599.95 is: 134,399.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,257.05 : 489,384.66 = 89,599.95 : x
  2. Step 2: Convert to fraction form
    326,257.05/489,384.66 = 89,599.95/x
  3. Step 3: Cross multiply
    326,257.05x = 489,384.66 × 89,599.95
  4. Step 4: Simplify right side
    326,257.05x = 43,848,841,066.77
  5. Step 5: Solve for x
    x = 43,848,841,066.77/326,257.05
  6. Step 6: Final answer
    x = 134,399.67

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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.