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Finding the Fourth Proportional to 301,062.12, 415,431.90 and 173,779.80

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Solution

The fourth proportional to 301,062.12, 415,431.90 and 173,779.80 is: 239,796.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,062.12 : 415,431.90 = 173,779.80 : x
  2. Step 2: Convert to fraction form
    301,062.12/415,431.90 = 173,779.80/x
  3. Step 3: Cross multiply
    301,062.12x = 415,431.90 × 173,779.80
  4. Step 4: Simplify right side
    301,062.12x = 72,193,672,495.62
  5. Step 5: Solve for x
    x = 72,193,672,495.62/301,062.12
  6. Step 6: Final answer
    x = 239,796.60

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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.