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Finding the Fourth Proportional to 543,300.40, 814,914.15 and 143,932.60

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Solution

The fourth proportional to 543,300.40, 814,914.15 and 143,932.60 is: 215,889.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,300.40 : 814,914.15 = 143,932.60 : x
  2. Step 2: Convert to fraction form
    543,300.40/814,914.15 = 143,932.60/x
  3. Step 3: Cross multiply
    543,300.40x = 814,914.15 × 143,932.60
  4. Step 4: Simplify right side
    543,300.40x = 117,292,712,386.29
  5. Step 5: Solve for x
    x = 117,292,712,386.29/543,300.40
  6. Step 6: Final answer
    x = 215,889.24

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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.