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Finding the Fourth Proportional to 545,213.60, 817,820.40 and 245,343.86

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Solution

The fourth proportional to 545,213.60, 817,820.40 and 245,343.86 is: 368,015.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,213.60 : 817,820.40 = 245,343.86 : x
  2. Step 2: Convert to fraction form
    545,213.60/817,820.40 = 245,343.86/x
  3. Step 3: Cross multiply
    545,213.60x = 817,820.40 × 245,343.86
  4. Step 4: Simplify right side
    545,213.60x = 200,647,209,633.64
  5. Step 5: Solve for x
    x = 200,647,209,633.64/545,213.60
  6. Step 6: Final answer
    x = 368,015.78

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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.