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Finding the Fourth Proportional to 445,258.71, 667,950.45 and 145,762.83

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Solution

The fourth proportional to 445,258.71, 667,950.45 and 145,762.83 is: 218,664.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,258.71 : 667,950.45 = 145,762.83 : x
  2. Step 2: Convert to fraction form
    445,258.71/667,950.45 = 145,762.83/x
  3. Step 3: Cross multiply
    445,258.71x = 667,950.45 × 145,762.83
  4. Step 4: Simplify right side
    445,258.71x = 97,362,347,891.77
  5. Step 5: Solve for x
    x = 97,362,347,891.77/445,258.71
  6. Step 6: Final answer
    x = 218,664.67

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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.