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Finding the Fourth Proportional to 543,337.40, 814,969.65 and 143,969.60

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Solution

The fourth proportional to 543,337.40, 814,969.65 and 143,969.60 is: 215,944.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,337.40 : 814,969.65 = 143,969.60 : x
  2. Step 2: Convert to fraction form
    543,337.40/814,969.65 = 143,969.60/x
  3. Step 3: Cross multiply
    543,337.40x = 814,969.65 × 143,969.60
  4. Step 4: Simplify right side
    543,337.40x = 117,330,854,522.64
  5. Step 5: Solve for x
    x = 117,330,854,522.64/543,337.40
  6. Step 6: Final answer
    x = 215,944.74

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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.