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Finding the Fourth Proportional to 559,893.03, 772,645.82 and 305,246.31

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Solution

The fourth proportional to 559,893.03, 772,645.82 and 305,246.31 is: 421,236.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,893.03 : 772,645.82 = 305,246.31 : x
  2. Step 2: Convert to fraction form
    559,893.03/772,645.82 = 305,246.31/x
  3. Step 3: Cross multiply
    559,893.03x = 772,645.82 × 305,246.31
  4. Step 4: Simplify right side
    559,893.03x = 235,847,283,965.69
  5. Step 5: Solve for x
    x = 235,847,283,965.69/559,893.03
  6. Step 6: Final answer
    x = 421,236.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.