Home / 402,766.80-555,799.16-221,486.37

Finding the Fourth Proportional to 402,766.80, 555,799.16 and 221,486.37

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Solution

The fourth proportional to 402,766.80, 555,799.16 and 221,486.37 is: 305,640.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,766.80 : 555,799.16 = 221,486.37 : x
  2. Step 2: Convert to fraction form
    402,766.80/555,799.16 = 221,486.37/x
  3. Step 3: Cross multiply
    402,766.80x = 555,799.16 × 221,486.37
  4. Step 4: Simplify right side
    402,766.80x = 123,101,938,397.45
  5. Step 5: Solve for x
    x = 123,101,938,397.45/402,766.80
  6. Step 6: Final answer
    x = 305,640.73

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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.