Home / 261,283.08-391,942.44-103,511.28

Finding the Fourth Proportional to 261,283.08, 391,942.44 and 103,511.28

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Solution

The fourth proportional to 261,283.08, 391,942.44 and 103,511.28 is: 155,273.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,283.08 : 391,942.44 = 103,511.28 : x
  2. Step 2: Convert to fraction form
    261,283.08/391,942.44 = 103,511.28/x
  3. Step 3: Cross multiply
    261,283.08x = 391,942.44 × 103,511.28
  4. Step 4: Simplify right side
    261,283.08x = 40,570,463,650.72
  5. Step 5: Solve for x
    x = 40,570,463,650.72/261,283.08
  6. Step 6: Final answer
    x = 155,273.98

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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.