Home / 220,535.30-330,805.51-209,779.36

Finding the Fourth Proportional to 220,535.30, 330,805.51 and 209,779.36

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Solution

The fourth proportional to 220,535.30, 330,805.51 and 209,779.36 is: 314,671.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,535.30 : 330,805.51 = 209,779.36 : x
  2. Step 2: Convert to fraction form
    220,535.30/330,805.51 = 209,779.36/x
  3. Step 3: Cross multiply
    220,535.30x = 330,805.51 × 209,779.36
  4. Step 4: Simplify right side
    220,535.30x = 69,396,166,820.81
  5. Step 5: Solve for x
    x = 69,396,166,820.81/220,535.30
  6. Step 6: Final answer
    x = 314,671.47

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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.