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Finding the Fourth Proportional to 343,805.32, 515,732.82 and 143,924.68

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Solution

The fourth proportional to 343,805.32, 515,732.82 and 143,924.68 is: 215,897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,805.32 : 515,732.82 = 143,924.68 : x
  2. Step 2: Convert to fraction form
    343,805.32/515,732.82 = 143,924.68/x
  3. Step 3: Cross multiply
    343,805.32x = 515,732.82 × 143,924.68
  4. Step 4: Simplify right side
    343,805.32x = 74,226,681,084.00
  5. Step 5: Solve for x
    x = 74,226,681,084.00/343,805.32
  6. Step 6: Final answer
    x = 215,897.42

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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.