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Finding the Fourth Proportional to 328,522.55, 492,708.49 and 91,881.95

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Solution

The fourth proportional to 328,522.55, 492,708.49 and 91,881.95 is: 137,801.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,522.55 : 492,708.49 = 91,881.95 : x
  2. Step 2: Convert to fraction form
    328,522.55/492,708.49 = 91,881.95/x
  3. Step 3: Cross multiply
    328,522.55x = 492,708.49 × 91,881.95
  4. Step 4: Simplify right side
    328,522.55x = 45,271,014,149.51
  5. Step 5: Solve for x
    x = 45,271,014,149.51/328,522.55
  6. Step 6: Final answer
    x = 137,801.85

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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.