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Finding the Fourth Proportional to 422,984.95, 634,329.85 and 170,199.95

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Solution

The fourth proportional to 422,984.95, 634,329.85 and 170,199.95 is: 255,240.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,984.95 : 634,329.85 = 170,199.95 : x
  2. Step 2: Convert to fraction form
    422,984.95/634,329.85 = 170,199.95/x
  3. Step 3: Cross multiply
    422,984.95x = 634,329.85 × 170,199.95
  4. Step 4: Simplify right side
    422,984.95x = 107,962,908,753.51
  5. Step 5: Solve for x
    x = 107,962,908,753.51/422,984.95
  6. Step 6: Final answer
    x = 255,240.54

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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.