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Finding the Fourth Proportional to 395,779.88, 593,676.30 and 115,312.52

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Solution

The fourth proportional to 395,779.88, 593,676.30 and 115,312.52 is: 172,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,779.88 : 593,676.30 = 115,312.52 : x
  2. Step 2: Convert to fraction form
    395,779.88/593,676.30 = 115,312.52/x
  3. Step 3: Cross multiply
    395,779.88x = 593,676.30 × 115,312.52
  4. Step 4: Simplify right side
    395,779.88x = 68,458,310,217.28
  5. Step 5: Solve for x
    x = 68,458,310,217.28/395,779.88
  6. Step 6: Final answer
    x = 172,970.67

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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.