Home / 402,749.15-555,778.89-221,450.30

Finding the Fourth Proportional to 402,749.15, 555,778.89 and 221,450.30

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Solution

The fourth proportional to 402,749.15, 555,778.89 and 221,450.30 is: 305,593.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,749.15 : 555,778.89 = 221,450.30 : x
  2. Step 2: Convert to fraction form
    402,749.15/555,778.89 = 221,450.30/x
  3. Step 3: Cross multiply
    402,749.15x = 555,778.89 × 221,450.30
  4. Step 4: Simplify right side
    402,749.15x = 123,077,399,145.27
  5. Step 5: Solve for x
    x = 123,077,399,145.27/402,749.15
  6. Step 6: Final answer
    x = 305,593.19

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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.