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Finding the Fourth Proportional to 547,488.40, 821,086.80 and 168,408.40

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Solution

The fourth proportional to 547,488.40, 821,086.80 and 168,408.40 is: 252,567.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,488.40 : 821,086.80 = 168,408.40 : x
  2. Step 2: Convert to fraction form
    547,488.40/821,086.80 = 168,408.40/x
  3. Step 3: Cross multiply
    547,488.40x = 821,086.80 × 168,408.40
  4. Step 4: Simplify right side
    547,488.40x = 138,277,914,249.12
  5. Step 5: Solve for x
    x = 138,277,914,249.12/547,488.40
  6. Step 6: Final answer
    x = 252,567.75

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1.5x scale

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.