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Finding the Fourth Proportional to 547,479.72, 821,221.51 and 168,397.90

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Solution

The fourth proportional to 547,479.72, 821,221.51 and 168,397.90 is: 252,597.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,479.72 : 821,221.51 = 168,397.90 : x
  2. Step 2: Convert to fraction form
    547,479.72/821,221.51 = 168,397.90/x
  3. Step 3: Cross multiply
    547,479.72x = 821,221.51 × 168,397.90
  4. Step 4: Simplify right side
    547,479.72x = 138,291,973,612.72
  5. Step 5: Solve for x
    x = 138,291,973,612.72/547,479.72
  6. Step 6: Final answer
    x = 252,597.44

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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.