Home / 402,535.15-555,504.20-221,263.83

Finding the Fourth Proportional to 402,535.15, 555,504.20 and 221,263.83

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Solution

The fourth proportional to 402,535.15, 555,504.20 and 221,263.83 is: 305,347.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,535.15 : 555,504.20 = 221,263.83 : x
  2. Step 2: Convert to fraction form
    402,535.15/555,504.20 = 221,263.83/x
  3. Step 3: Cross multiply
    402,535.15x = 555,504.20 × 221,263.83
  4. Step 4: Simplify right side
    402,535.15x = 122,912,986,873.09
  5. Step 5: Solve for x
    x = 122,912,986,873.09/402,535.15
  6. Step 6: Final answer
    x = 305,347.21

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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.