Home / 402,822.58-555,884.07-221,534.52

Finding the Fourth Proportional to 402,822.58, 555,884.07 and 221,534.52

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Solution

The fourth proportional to 402,822.58, 555,884.07 and 221,534.52 is: 305,711.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,822.58 : 555,884.07 = 221,534.52 : x
  2. Step 2: Convert to fraction form
    402,822.58/555,884.07 = 221,534.52/x
  3. Step 3: Cross multiply
    402,822.58x = 555,884.07 × 221,534.52
  4. Step 4: Simplify right side
    402,822.58x = 123,147,507,843.68
  5. Step 5: Solve for x
    x = 123,147,507,843.68/402,822.58
  6. Step 6: Final answer
    x = 305,711.54

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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.