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Finding the Fourth Proportional to 371,465.40, 557,198.10 and 134,815.80

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Solution

The fourth proportional to 371,465.40, 557,198.10 and 134,815.80 is: 202,223.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,465.40 : 557,198.10 = 134,815.80 : x
  2. Step 2: Convert to fraction form
    371,465.40/557,198.10 = 134,815.80/x
  3. Step 3: Cross multiply
    371,465.40x = 557,198.10 × 134,815.80
  4. Step 4: Simplify right side
    371,465.40x = 75,119,107,609.98
  5. Step 5: Solve for x
    x = 75,119,107,609.98/371,465.40
  6. Step 6: Final answer
    x = 202,223.70

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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.