Home / 422,927.20-634,391.76-142,641.28

Finding the Fourth Proportional to 422,927.20, 634,391.76 and 142,641.28

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Solution

The fourth proportional to 422,927.20, 634,391.76 and 142,641.28 is: 213,962.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,927.20 : 634,391.76 = 142,641.28 : x
  2. Step 2: Convert to fraction form
    422,927.20/634,391.76 = 142,641.28/x
  3. Step 3: Cross multiply
    422,927.20x = 634,391.76 × 142,641.28
  4. Step 4: Simplify right side
    422,927.20x = 90,490,452,667.85
  5. Step 5: Solve for x
    x = 90,490,452,667.85/422,927.20
  6. Step 6: Final answer
    x = 213,962.24

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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.