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Finding the Fourth Proportional to 521,859.08, 720,168.30 and 292,416.86

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Solution

The fourth proportional to 521,859.08, 720,168.30 and 292,416.86 is: 403,536.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,859.08 : 720,168.30 = 292,416.86 : x
  2. Step 2: Convert to fraction form
    521,859.08/720,168.30 = 292,416.86/x
  3. Step 3: Cross multiply
    521,859.08x = 720,168.30 × 292,416.86
  4. Step 4: Simplify right side
    521,859.08x = 210,589,354,757.96
  5. Step 5: Solve for x
    x = 210,589,354,757.96/521,859.08
  6. Step 6: Final answer
    x = 403,536.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.