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Finding the Fourth Proportional to 559,791.48, 772,520.28 and 305,142.66

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Solution

The fourth proportional to 559,791.48, 772,520.28 and 305,142.66 is: 421,101.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,791.48 : 772,520.28 = 305,142.66 : x
  2. Step 2: Convert to fraction form
    559,791.48/772,520.28 = 305,142.66/x
  3. Step 3: Cross multiply
    559,791.48x = 772,520.28 × 305,142.66
  4. Step 4: Simplify right side
    559,791.48x = 235,728,893,143.15
  5. Step 5: Solve for x
    x = 235,728,893,143.15/559,791.48
  6. Step 6: Final answer
    x = 421,101.25

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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.