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Finding the Fourth Proportional to 479,308.70, 718,783.64 and 205,720.38

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Solution

The fourth proportional to 479,308.70, 718,783.64 and 205,720.38 is: 308,503.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,308.70 : 718,783.64 = 205,720.38 : x
  2. Step 2: Convert to fraction form
    479,308.70/718,783.64 = 205,720.38/x
  3. Step 3: Cross multiply
    479,308.70x = 718,783.64 × 205,720.38
  4. Step 4: Simplify right side
    479,308.70x = 147,868,443,558.58
  5. Step 5: Solve for x
    x = 147,868,443,558.58/479,308.70
  6. Step 6: Final answer
    x = 308,503.57

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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.