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Finding the Fourth Proportional to 293,634.78, 440,393.85 and 143,810.70

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Solution

The fourth proportional to 293,634.78, 440,393.85 and 143,810.70 is: 215,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,634.78 : 440,393.85 = 143,810.70 : x
  2. Step 2: Convert to fraction form
    293,634.78/440,393.85 = 143,810.70/x
  3. Step 3: Cross multiply
    293,634.78x = 440,393.85 × 143,810.70
  4. Step 4: Simplify right side
    293,634.78x = 63,333,347,844.20
  5. Step 5: Solve for x
    x = 63,333,347,844.20/293,634.78
  6. Step 6: Final answer
    x = 215,687.49

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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.