Home / 402,917.69-556,027.52-221,648.19

Finding the Fourth Proportional to 402,917.69, 556,027.52 and 221,648.19

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Solution

The fourth proportional to 402,917.69, 556,027.52 and 221,648.19 is: 305,875.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,917.69 : 556,027.52 = 221,648.19 : x
  2. Step 2: Convert to fraction form
    402,917.69/556,027.52 = 221,648.19/x
  3. Step 3: Cross multiply
    402,917.69x = 556,027.52 × 221,648.19
  4. Step 4: Simplify right side
    402,917.69x = 123,242,493,398.19
  5. Step 5: Solve for x
    x = 123,242,493,398.19/402,917.69
  6. Step 6: Final answer
    x = 305,875.11

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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.