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Finding the Fourth Proportional to 543,326.90, 814,953.90 and 143,959.10

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Solution

The fourth proportional to 543,326.90, 814,953.90 and 143,959.10 is: 215,928.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,326.90 : 814,953.90 = 143,959.10 : x
  2. Step 2: Convert to fraction form
    543,326.90/814,953.90 = 143,959.10/x
  3. Step 3: Cross multiply
    543,326.90x = 814,953.90 × 143,959.10
  4. Step 4: Simplify right side
    543,326.90x = 117,320,029,985.49
  5. Step 5: Solve for x
    x = 117,320,029,985.49/543,326.90
  6. Step 6: Final answer
    x = 215,928.99

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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.