Home / 251,610.96-347,218.16-138,435.60

Finding the Fourth Proportional to 251,610.96, 347,218.16 and 138,435.60

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Solution

The fourth proportional to 251,610.96, 347,218.16 and 138,435.60 is: 191,038.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,610.96 : 347,218.16 = 138,435.60 : x
  2. Step 2: Convert to fraction form
    251,610.96/347,218.16 = 138,435.60/x
  3. Step 3: Cross multiply
    251,610.96x = 347,218.16 × 138,435.60
  4. Step 4: Simplify right side
    251,610.96x = 48,067,354,310.50
  5. Step 5: Solve for x
    x = 48,067,354,310.50/251,610.96
  6. Step 6: Final answer
    x = 191,038.40

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1.5x scale

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.