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Finding the Fourth Proportional to 289,922.40, 435,758.40 and 251,431.20

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Solution

The fourth proportional to 289,922.40, 435,758.40 and 251,431.20 is: 377,905.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,922.40 : 435,758.40 = 251,431.20 : x
  2. Step 2: Convert to fraction form
    289,922.40/435,758.40 = 251,431.20/x
  3. Step 3: Cross multiply
    289,922.40x = 435,758.40 × 251,431.20
  4. Step 4: Simplify right side
    289,922.40x = 109,563,257,422.08
  5. Step 5: Solve for x
    x = 109,563,257,422.08/289,922.40
  6. Step 6: Final answer
    x = 377,905.46

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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.