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Finding the Fourth Proportional to 328,760.58, 493,168.95 and 115,509.87

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Solution

The fourth proportional to 328,760.58, 493,168.95 and 115,509.87 is: 173,274.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,760.58 : 493,168.95 = 115,509.87 : x
  2. Step 2: Convert to fraction form
    328,760.58/493,168.95 = 115,509.87/x
  3. Step 3: Cross multiply
    328,760.58x = 493,168.95 × 115,509.87
  4. Step 4: Simplify right side
    328,760.58x = 56,965,881,302.54
  5. Step 5: Solve for x
    x = 56,965,881,302.54/328,760.58
  6. Step 6: Final answer
    x = 173,274.67

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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.