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Finding the Fourth Proportional to 318,398.56, 439,376.16 and 175,149.52

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Solution

The fourth proportional to 318,398.56, 439,376.16 and 175,149.52 is: 241,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,398.56 : 439,376.16 = 175,149.52 : x
  2. Step 2: Convert to fraction form
    318,398.56/439,376.16 = 175,149.52/x
  3. Step 3: Cross multiply
    318,398.56x = 439,376.16 × 175,149.52
  4. Step 4: Simplify right side
    318,398.56x = 76,956,523,523.44
  5. Step 5: Solve for x
    x = 76,956,523,523.44/318,398.56
  6. Step 6: Final answer
    x = 241,698.72

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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.