Home / 411,927.21-617,918.90-131,465.61

Finding the Fourth Proportional to 411,927.21, 617,918.90 and 131,465.61

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Solution

The fourth proportional to 411,927.21, 617,918.90 and 131,465.61 is: 197,207.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,927.21 : 617,918.90 = 131,465.61 : x
  2. Step 2: Convert to fraction form
    411,927.21/617,918.90 = 131,465.61/x
  3. Step 3: Cross multiply
    411,927.21x = 617,918.90 × 131,465.61
  4. Step 4: Simplify right side
    411,927.21x = 81,235,084,461.70
  5. Step 5: Solve for x
    x = 81,235,084,461.70/411,927.21
  6. Step 6: Final answer
    x = 197,207.38

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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.