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Finding the Fourth Proportional to 318,418.75, 439,417.22 and 175,178.45

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Solution

The fourth proportional to 318,418.75, 439,417.22 and 175,178.45 is: 241,745.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,418.75 : 439,417.22 = 175,178.45 : x
  2. Step 2: Convert to fraction form
    318,418.75/439,417.22 = 175,178.45/x
  3. Step 3: Cross multiply
    318,418.75x = 439,417.22 × 175,178.45
  4. Step 4: Simplify right side
    318,418.75x = 76,976,428,710.94
  5. Step 5: Solve for x
    x = 76,976,428,710.94/318,418.75
  6. Step 6: Final answer
    x = 241,745.90

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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.