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Finding the Fourth Proportional to 291,668.20, 437,429.40 and 111,714.55

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Solution

The fourth proportional to 291,668.20, 437,429.40 and 111,714.55 is: 167,543.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,668.20 : 437,429.40 = 111,714.55 : x
  2. Step 2: Convert to fraction form
    291,668.20/437,429.40 = 111,714.55/x
  3. Step 3: Cross multiply
    291,668.20x = 437,429.40 × 111,714.55
  4. Step 4: Simplify right side
    291,668.20x = 48,867,228,577.77
  5. Step 5: Solve for x
    x = 48,867,228,577.77/291,668.20
  6. Step 6: Final answer
    x = 167,543.90

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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.