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Finding the Fourth Proportional to 311,869.02, 430,354.48 and 175,859.49

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Solution

The fourth proportional to 311,869.02, 430,354.48 and 175,859.49 is: 242,672.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,869.02 : 430,354.48 = 175,859.49 : x
  2. Step 2: Convert to fraction form
    311,869.02/430,354.48 = 175,859.49/x
  3. Step 3: Cross multiply
    311,869.02x = 430,354.48 × 175,859.49
  4. Step 4: Simplify right side
    311,869.02x = 75,681,919,372.02
  5. Step 5: Solve for x
    x = 75,681,919,372.02/311,869.02
  6. Step 6: Final answer
    x = 242,672.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.