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Finding the Fourth Proportional to 479,390.72, 719,360.82 and 195,028.79

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Solution

The fourth proportional to 479,390.72, 719,360.82 and 195,028.79 is: 292,654.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,390.72 : 719,360.82 = 195,028.79 : x
  2. Step 2: Convert to fraction form
    479,390.72/719,360.82 = 195,028.79/x
  3. Step 3: Cross multiply
    479,390.72x = 719,360.82 × 195,028.79
  4. Step 4: Simplify right side
    479,390.72x = 140,296,066,701.20
  5. Step 5: Solve for x
    x = 140,296,066,701.20/479,390.72
  6. Step 6: Final answer
    x = 292,654.95

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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.