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Finding the Fourth Proportional to 313,658.49, 432,850.32 and 170,418.90

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Solution

The fourth proportional to 313,658.49, 432,850.32 and 170,418.90 is: 235,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,658.49 : 432,850.32 = 170,418.90 : x
  2. Step 2: Convert to fraction form
    313,658.49/432,850.32 = 170,418.90/x
  3. Step 3: Cross multiply
    313,658.49x = 432,850.32 × 170,418.90
  4. Step 4: Simplify right side
    313,658.49x = 73,765,875,399.05
  5. Step 5: Solve for x
    x = 73,765,875,399.05/313,658.49
  6. Step 6: Final answer
    x = 235,178.95

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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.