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Finding the Fourth Proportional to 328,696.56, 492,822.36 and 128,892.24

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Solution

The fourth proportional to 328,696.56, 492,822.36 and 128,892.24 is: 193,251.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,696.56 : 492,822.36 = 128,892.24 : x
  2. Step 2: Convert to fraction form
    328,696.56/492,822.36 = 128,892.24/x
  3. Step 3: Cross multiply
    328,696.56x = 492,822.36 × 128,892.24
  4. Step 4: Simplify right side
    328,696.56x = 63,520,977,902.49
  5. Step 5: Solve for x
    x = 63,520,977,902.49/328,696.56
  6. Step 6: Final answer
    x = 193,251.12

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1.5x scale

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.