Home / 402,917.64-556,014.58-221,629.47

Finding the Fourth Proportional to 402,917.64, 556,014.58 and 221,629.47

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Solution

The fourth proportional to 402,917.64, 556,014.58 and 221,629.47 is: 305,842.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,917.64 : 556,014.58 = 221,629.47 : x
  2. Step 2: Convert to fraction form
    402,917.64/556,014.58 = 221,629.47/x
  3. Step 3: Cross multiply
    402,917.64x = 556,014.58 × 221,629.47
  4. Step 4: Simplify right side
    402,917.64x = 123,229,214,038.54
  5. Step 5: Solve for x
    x = 123,229,214,038.54/402,917.64
  6. Step 6: Final answer
    x = 305,842.19

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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.