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Finding the Fourth Proportional to 547,900.90, 821,462.55 and 210,811.30

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Solution

The fourth proportional to 547,900.90, 821,462.55 and 210,811.30 is: 316,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,900.90 : 821,462.55 = 210,811.30 : x
  2. Step 2: Convert to fraction form
    547,900.90/821,462.55 = 210,811.30/x
  3. Step 3: Cross multiply
    547,900.90x = 821,462.55 × 210,811.30
  4. Step 4: Simplify right side
    547,900.90x = 173,173,588,066.82
  5. Step 5: Solve for x
    x = 173,173,588,066.82/547,900.90
  6. Step 6: Final answer
    x = 316,067.35

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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.