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Finding the Fourth Proportional to 213,329.30, 319,907.55 and 73,015.70

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Solution

The fourth proportional to 213,329.30, 319,907.55 and 73,015.70 is: 109,493.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,329.30 : 319,907.55 = 73,015.70 : x
  2. Step 2: Convert to fraction form
    213,329.30/319,907.55 = 73,015.70/x
  3. Step 3: Cross multiply
    213,329.30x = 319,907.55 × 73,015.70
  4. Step 4: Simplify right side
    213,329.30x = 23,358,273,698.54
  5. Step 5: Solve for x
    x = 23,358,273,698.54/213,329.30
  6. Step 6: Final answer
    x = 109,493.98

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1.5x scale

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.