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Finding the Fourth Proportional to 321,779.21, 482,731.73 and 97,157.93

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Solution

The fourth proportional to 321,779.21, 482,731.73 and 97,157.93 is: 145,755.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,779.21 : 482,731.73 = 97,157.93 : x
  2. Step 2: Convert to fraction form
    321,779.21/482,731.73 = 97,157.93/x
  3. Step 3: Cross multiply
    321,779.21x = 482,731.73 × 97,157.93
  4. Step 4: Simplify right side
    321,779.21x = 46,901,215,632.12
  5. Step 5: Solve for x
    x = 46,901,215,632.12/321,779.21
  6. Step 6: Final answer
    x = 145,755.89

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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.