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Finding the Fourth Proportional to 328,124.21, 492,188.38 and 91,468.94

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Solution

The fourth proportional to 328,124.21, 492,188.38 and 91,468.94 is: 137,203.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,124.21 : 492,188.38 = 91,468.94 : x
  2. Step 2: Convert to fraction form
    328,124.21/492,188.38 = 91,468.94/x
  3. Step 3: Cross multiply
    328,124.21x = 492,188.38 × 91,468.94
  4. Step 4: Simplify right side
    328,124.21x = 45,019,946,709.30
  5. Step 5: Solve for x
    x = 45,019,946,709.30/328,124.21
  6. Step 6: Final answer
    x = 137,203.98

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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.