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Finding the Fourth Proportional to 358,728.49, 538,168.64 and 118,828.82

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Solution

The fourth proportional to 358,728.49, 538,168.64 and 118,828.82 is: 178,268.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,728.49 : 538,168.64 = 118,828.82 : x
  2. Step 2: Convert to fraction form
    358,728.49/538,168.64 = 118,828.82/x
  3. Step 3: Cross multiply
    358,728.49x = 538,168.64 × 118,828.82
  4. Step 4: Simplify right side
    358,728.49x = 63,949,944,452.20
  5. Step 5: Solve for x
    x = 63,949,944,452.20/358,728.49
  6. Step 6: Final answer
    x = 178,268.37

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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.