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Finding the Fourth Proportional to 351,170.34, 526,779.35 and 123,438.30

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Solution

The fourth proportional to 351,170.34, 526,779.35 and 123,438.30 is: 185,165.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,170.34 : 526,779.35 = 123,438.30 : x
  2. Step 2: Convert to fraction form
    351,170.34/526,779.35 = 123,438.30/x
  3. Step 3: Cross multiply
    351,170.34x = 526,779.35 × 123,438.30
  4. Step 4: Simplify right side
    351,170.34x = 65,024,746,821.91
  5. Step 5: Solve for x
    x = 65,024,746,821.91/351,170.34
  6. Step 6: Final answer
    x = 185,165.83

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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.