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Finding the Fourth Proportional to 264,920.20, 397,380.30 and 115,329.40

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Solution

The fourth proportional to 264,920.20, 397,380.30 and 115,329.40 is: 172,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,920.20 : 397,380.30 = 115,329.40 : x
  2. Step 2: Convert to fraction form
    264,920.20/397,380.30 = 115,329.40/x
  3. Step 3: Cross multiply
    264,920.20x = 397,380.30 × 115,329.40
  4. Step 4: Simplify right side
    264,920.20x = 45,829,631,570.82
  5. Step 5: Solve for x
    x = 45,829,631,570.82/264,920.20
  6. Step 6: Final answer
    x = 172,994.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.