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Finding the Fourth Proportional to 547,489.90, 821,695.65 and 267,246.70

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Solution

The fourth proportional to 547,489.90, 821,695.65 and 267,246.70 is: 401,094.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,489.90 : 821,695.65 = 267,246.70 : x
  2. Step 2: Convert to fraction form
    547,489.90/821,695.65 = 267,246.70/x
  3. Step 3: Cross multiply
    547,489.90x = 821,695.65 × 267,246.70
  4. Step 4: Simplify right side
    547,489.90x = 219,595,450,866.86
  5. Step 5: Solve for x
    x = 219,595,450,866.86/547,489.90
  6. Step 6: Final answer
    x = 401,094.98

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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.