Home / 402,559.86-555,504.57-221,267.28

Finding the Fourth Proportional to 402,559.86, 555,504.57 and 221,267.28

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Solution

The fourth proportional to 402,559.86, 555,504.57 and 221,267.28 is: 305,333.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,559.86 : 555,504.57 = 221,267.28 : x
  2. Step 2: Convert to fraction form
    402,559.86/555,504.57 = 221,267.28/x
  3. Step 3: Cross multiply
    402,559.86x = 555,504.57 × 221,267.28
  4. Step 4: Simplify right side
    402,559.86x = 122,914,985,231.47
  5. Step 5: Solve for x
    x = 122,914,985,231.47/402,559.86
  6. Step 6: Final answer
    x = 305,333.44

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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.