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Finding the Fourth Proportional to 355,854, 533,857.12 and 131,215.04

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Solution

The fourth proportional to 355,854, 533,857.12 and 131,215.04 is: 196,850.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,854 : 533,857.12 = 131,215.04 : x
  2. Step 2: Convert to fraction form
    355,854/533,857.12 = 131,215.04/x
  3. Step 3: Cross multiply
    355,854x = 533,857.12 × 131,215.04
  4. Step 4: Simplify right side
    355,854x = 70,050,083,355.08
  5. Step 5: Solve for x
    x = 70,050,083,355.08/355,854
  6. Step 6: Final answer
    x = 196,850.63

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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.