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Finding the Fourth Proportional to 397,354.80, 548,552.78 and 306,506.82

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Solution

The fourth proportional to 397,354.80, 548,552.78 and 306,506.82 is: 423,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,354.80 : 548,552.78 = 306,506.82 : x
  2. Step 2: Convert to fraction form
    397,354.80/548,552.78 = 306,506.82/x
  3. Step 3: Cross multiply
    397,354.80x = 548,552.78 × 306,506.82
  4. Step 4: Simplify right side
    397,354.80x = 168,135,168,199.96
  5. Step 5: Solve for x
    x = 168,135,168,199.96/397,354.80
  6. Step 6: Final answer
    x = 423,136.12

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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.