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Finding the Fourth Proportional to 321,070.83, 481,567.91 and 84,431.94

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Solution

The fourth proportional to 321,070.83, 481,567.91 and 84,431.94 is: 126,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,070.83 : 481,567.91 = 84,431.94 : x
  2. Step 2: Convert to fraction form
    321,070.83/481,567.91 = 84,431.94/x
  3. Step 3: Cross multiply
    321,070.83x = 481,567.91 × 84,431.94
  4. Step 4: Simplify right side
    321,070.83x = 40,659,712,460.89
  5. Step 5: Solve for x
    x = 40,659,712,460.89/321,070.83
  6. Step 6: Final answer
    x = 126,637.83

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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.