Home / 411,643.17-617,458.04-131,156.61

Finding the Fourth Proportional to 411,643.17, 617,458.04 and 131,156.61

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Solution

The fourth proportional to 411,643.17, 617,458.04 and 131,156.61 is: 196,732.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,643.17 : 617,458.04 = 131,156.61 : x
  2. Step 2: Convert to fraction form
    411,643.17/617,458.04 = 131,156.61/x
  3. Step 3: Cross multiply
    411,643.17x = 617,458.04 × 131,156.61
  4. Step 4: Simplify right side
    411,643.17x = 80,983,702,687.86
  5. Step 5: Solve for x
    x = 80,983,702,687.86/411,643.17
  6. Step 6: Final answer
    x = 196,732.77

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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.