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Finding the Fourth Proportional to 326,779.83, 451,109.76 and 218,065.09

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Solution

The fourth proportional to 326,779.83, 451,109.76 and 218,065.09 is: 301,032.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,779.83 : 451,109.76 = 218,065.09 : x
  2. Step 2: Convert to fraction form
    326,779.83/451,109.76 = 218,065.09/x
  3. Step 3: Cross multiply
    326,779.83x = 451,109.76 × 218,065.09
  4. Step 4: Simplify right side
    326,779.83x = 98,371,288,045.84
  5. Step 5: Solve for x
    x = 98,371,288,045.84/326,779.83
  6. Step 6: Final answer
    x = 301,032.31

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1.5x scale

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.