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Finding the Fourth Proportional to 488,956.68, 675,090.22 and 305,475.88

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Solution

The fourth proportional to 488,956.68, 675,090.22 and 305,475.88 is: 421,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,956.68 : 675,090.22 = 305,475.88 : x
  2. Step 2: Convert to fraction form
    488,956.68/675,090.22 = 305,475.88/x
  3. Step 3: Cross multiply
    488,956.68x = 675,090.22 × 305,475.88
  4. Step 4: Simplify right side
    488,956.68x = 206,223,779,033.89
  5. Step 5: Solve for x
    x = 206,223,779,033.89/488,956.68
  6. Step 6: Final answer
    x = 421,762.88

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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.