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Finding the Fourth Proportional to 289,156.60, 433,605.30 and 131,303.80

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Solution

The fourth proportional to 289,156.60, 433,605.30 and 131,303.80 is: 196,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,156.60 : 433,605.30 = 131,303.80 : x
  2. Step 2: Convert to fraction form
    289,156.60/433,605.30 = 131,303.80/x
  3. Step 3: Cross multiply
    289,156.60x = 433,605.30 × 131,303.80
  4. Step 4: Simplify right side
    289,156.60x = 56,934,023,590.14
  5. Step 5: Solve for x
    x = 56,934,023,590.14/289,156.60
  6. Step 6: Final answer
    x = 196,896.85

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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.