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Finding the Fourth Proportional to 371,625.81, 557,521.79 and 118,921.47

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Solution

The fourth proportional to 371,625.81, 557,521.79 and 118,921.47 is: 178,408.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,625.81 : 557,521.79 = 118,921.47 : x
  2. Step 2: Convert to fraction form
    371,625.81/557,521.79 = 118,921.47/x
  3. Step 3: Cross multiply
    371,625.81x = 557,521.79 × 118,921.47
  4. Step 4: Simplify right side
    371,625.81x = 66,301,308,138.52
  5. Step 5: Solve for x
    x = 66,301,308,138.52/371,625.81
  6. Step 6: Final answer
    x = 178,408.78

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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.