Home / 411,938.64-617,918.76-131,455.62

Finding the Fourth Proportional to 411,938.64, 617,918.76 and 131,455.62

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Solution

The fourth proportional to 411,938.64, 617,918.76 and 131,455.62 is: 197,186.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,938.64 : 617,918.76 = 131,455.62 : x
  2. Step 2: Convert to fraction form
    411,938.64/617,918.76 = 131,455.62/x
  3. Step 3: Cross multiply
    411,938.64x = 617,918.76 × 131,455.62
  4. Step 4: Simplify right side
    411,938.64x = 81,228,893,705.43
  5. Step 5: Solve for x
    x = 81,228,893,705.43/411,938.64
  6. Step 6: Final answer
    x = 197,186.88

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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.