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Finding the Fourth Proportional to 318,809.28, 439,956.90 and 175,568.88

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Solution

The fourth proportional to 318,809.28, 439,956.90 and 175,568.88 is: 242,285.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,809.28 : 439,956.90 = 175,568.88 : x
  2. Step 2: Convert to fraction form
    318,809.28/439,956.90 = 175,568.88/x
  3. Step 3: Cross multiply
    318,809.28x = 439,956.90 × 175,568.88
  4. Step 4: Simplify right side
    318,809.28x = 77,242,740,181.27
  5. Step 5: Solve for x
    x = 77,242,740,181.27/318,809.28
  6. Step 6: Final answer
    x = 242,285.11

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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.