Home / 631,279.20-947,051.78-204,781.72

Finding the Fourth Proportional to 631,279.20, 947,051.78 and 204,781.72

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Solution

The fourth proportional to 631,279.20, 947,051.78 and 204,781.72 is: 307,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,279.20 : 947,051.78 = 204,781.72 : x
  2. Step 2: Convert to fraction form
    631,279.20/947,051.78 = 204,781.72/x
  3. Step 3: Cross multiply
    631,279.20x = 947,051.78 × 204,781.72
  4. Step 4: Simplify right side
    631,279.20x = 193,938,890,581.79
  5. Step 5: Solve for x
    x = 193,938,890,581.79/631,279.20
  6. Step 6: Final answer
    x = 307,215.71

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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.