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Finding the Fourth Proportional to 324,779.70, 486,910.35 and 137,637.30

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Solution

The fourth proportional to 324,779.70, 486,910.35 and 137,637.30 is: 206,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,779.70 : 486,910.35 = 137,637.30 : x
  2. Step 2: Convert to fraction form
    324,779.70/486,910.35 = 137,637.30/x
  3. Step 3: Cross multiply
    324,779.70x = 486,910.35 × 137,637.30
  4. Step 4: Simplify right side
    324,779.70x = 67,017,025,916.06
  5. Step 5: Solve for x
    x = 67,017,025,916.06/324,779.70
  6. Step 6: Final answer
    x = 206,346.10

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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.