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Finding the Fourth Proportional to 371,881.05, 557,494.41 and 147,399.05

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Solution

The fourth proportional to 371,881.05, 557,494.41 and 147,399.05 is: 220,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,881.05 : 557,494.41 = 147,399.05 : x
  2. Step 2: Convert to fraction form
    371,881.05/557,494.41 = 147,399.05/x
  3. Step 3: Cross multiply
    371,881.05x = 557,494.41 × 147,399.05
  4. Step 4: Simplify right side
    371,881.05x = 82,174,145,963.72
  5. Step 5: Solve for x
    x = 82,174,145,963.72/371,881.05
  6. Step 6: Final answer
    x = 220,968.90

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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.