Home / 402,916.44-556,012.97-221,628.33

Finding the Fourth Proportional to 402,916.44, 556,012.97 and 221,628.33

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Solution

The fourth proportional to 402,916.44, 556,012.97 and 221,628.33 is: 305,840.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,916.44 : 556,012.97 = 221,628.33 : x
  2. Step 2: Convert to fraction form
    402,916.44/556,012.97 = 221,628.33/x
  3. Step 3: Cross multiply
    402,916.44x = 556,012.97 × 221,628.33
  4. Step 4: Simplify right side
    402,916.44x = 123,228,224,470.28
  5. Step 5: Solve for x
    x = 123,228,224,470.28/402,916.44
  6. Step 6: Final answer
    x = 305,840.65

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1.5x scale

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.