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Finding the Fourth Proportional to 313,658.60, 432,850.80 and 170,418.56

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Solution

The fourth proportional to 313,658.60, 432,850.80 and 170,418.56 is: 235,178.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,658.60 : 432,850.80 = 170,418.56 : x
  2. Step 2: Convert to fraction form
    313,658.60/432,850.80 = 170,418.56/x
  3. Step 3: Cross multiply
    313,658.60x = 432,850.80 × 170,418.56
  4. Step 4: Simplify right side
    313,658.60x = 73,765,810,030.85
  5. Step 5: Solve for x
    x = 73,765,810,030.85/313,658.60
  6. Step 6: Final answer
    x = 235,178.66

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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.