Home / 321,009.10-481,513.65-163,545.10

Finding the Fourth Proportional to 321,009.10, 481,513.65 and 163,545.10

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Solution

The fourth proportional to 321,009.10, 481,513.65 and 163,545.10 is: 245,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,009.10 : 481,513.65 = 163,545.10 : x
  2. Step 2: Convert to fraction form
    321,009.10/481,513.65 = 163,545.10/x
  3. Step 3: Cross multiply
    321,009.10x = 481,513.65 × 163,545.10
  4. Step 4: Simplify right side
    321,009.10x = 78,749,198,040.62
  5. Step 5: Solve for x
    x = 78,749,198,040.62/321,009.10
  6. Step 6: Final answer
    x = 245,317.65

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1.5x scale

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.