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Finding the Fourth Proportional to 289,248.60, 433,743.30 and 131,395.80

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Solution

The fourth proportional to 289,248.60, 433,743.30 and 131,395.80 is: 197,034.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,248.60 : 433,743.30 = 131,395.80 : x
  2. Step 2: Convert to fraction form
    289,248.60/433,743.30 = 131,395.80/x
  3. Step 3: Cross multiply
    289,248.60x = 433,743.30 × 131,395.80
  4. Step 4: Simplify right side
    289,248.60x = 56,992,047,898.14
  5. Step 5: Solve for x
    x = 56,992,047,898.14/289,248.60
  6. Step 6: Final answer
    x = 197,034.83

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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.