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Finding the Fourth Proportional to 219,907.98, 303,610.41 and 151,115.90

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Solution

The fourth proportional to 219,907.98, 303,610.41 and 151,115.90 is: 208,634.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,907.98 : 303,610.41 = 151,115.90 : x
  2. Step 2: Convert to fraction form
    219,907.98/303,610.41 = 151,115.90/x
  3. Step 3: Cross multiply
    219,907.98x = 303,610.41 × 151,115.90
  4. Step 4: Simplify right side
    219,907.98x = 45,880,358,838.47
  5. Step 5: Solve for x
    x = 45,880,358,838.47/219,907.98
  6. Step 6: Final answer
    x = 208,634.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.