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Finding the Fourth Proportional to 543,273.40, 814,873.65 and 143,905.60

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Solution

The fourth proportional to 543,273.40, 814,873.65 and 143,905.60 is: 215,848.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,273.40 : 814,873.65 = 143,905.60 : x
  2. Step 2: Convert to fraction form
    543,273.40/814,873.65 = 143,905.60/x
  3. Step 3: Cross multiply
    543,273.40x = 814,873.65 × 143,905.60
  4. Step 4: Simplify right side
    543,273.40x = 117,264,881,527.44
  5. Step 5: Solve for x
    x = 117,264,881,527.44/543,273.40
  6. Step 6: Final answer
    x = 215,848.74

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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.