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Finding the Fourth Proportional to 318,415.70, 439,408.86 and 175,167.20

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Solution

The fourth proportional to 318,415.70, 439,408.86 and 175,167.20 is: 241,728.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,415.70 : 439,408.86 = 175,167.20 : x
  2. Step 2: Convert to fraction form
    318,415.70/439,408.86 = 175,167.20/x
  3. Step 3: Cross multiply
    318,415.70x = 439,408.86 × 175,167.20
  4. Step 4: Simplify right side
    318,415.70x = 76,970,019,661.39
  5. Step 5: Solve for x
    x = 76,970,019,661.39/318,415.70
  6. Step 6: Final answer
    x = 241,728.09

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1.5x scale

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.