Home / 402,944.38-556,064.52-221,670.09

Finding the Fourth Proportional to 402,944.38, 556,064.52 and 221,670.09

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Solution

The fourth proportional to 402,944.38, 556,064.52 and 221,670.09 is: 305,905.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,944.38 : 556,064.52 = 221,670.09 : x
  2. Step 2: Convert to fraction form
    402,944.38/556,064.52 = 221,670.09/x
  3. Step 3: Cross multiply
    402,944.38x = 556,064.52 × 221,670.09
  4. Step 4: Simplify right side
    402,944.38x = 123,262,872,194.21
  5. Step 5: Solve for x
    x = 123,262,872,194.21/402,944.38
  6. Step 6: Final answer
    x = 305,905.43

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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.