Home / 402,943.10-556,055.55-221,644.22

Finding the Fourth Proportional to 402,943.10, 556,055.55 and 221,644.22

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Solution

The fourth proportional to 402,943.10, 556,055.55 and 221,644.22 is: 305,865.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,943.10 : 556,055.55 = 221,644.22 : x
  2. Step 2: Convert to fraction form
    402,943.10/556,055.55 = 221,644.22/x
  3. Step 3: Cross multiply
    402,943.10x = 556,055.55 × 221,644.22
  4. Step 4: Simplify right side
    402,943.10x = 123,246,495,876.14
  5. Step 5: Solve for x
    x = 123,246,495,876.14/402,943.10
  6. Step 6: Final answer
    x = 305,865.76

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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.