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Finding the Fourth Proportional to 423,028.56, 633,696.66 and 254,455.86

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Solution

The fourth proportional to 423,028.56, 633,696.66 and 254,455.86 is: 381,174.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,028.56 : 633,696.66 = 254,455.86 : x
  2. Step 2: Convert to fraction form
    423,028.56/633,696.66 = 254,455.86/x
  3. Step 3: Cross multiply
    423,028.56x = 633,696.66 × 254,455.86
  4. Step 4: Simplify right side
    423,028.56x = 161,247,828,599.43
  5. Step 5: Solve for x
    x = 161,247,828,599.43/423,028.56
  6. Step 6: Final answer
    x = 381,174.80

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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.