Home / 402,976.30-556,085.33-221,658.96

Finding the Fourth Proportional to 402,976.30, 556,085.33 and 221,658.96

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Solution

The fourth proportional to 402,976.30, 556,085.33 and 221,658.96 is: 305,877.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,976.30 : 556,085.33 = 221,658.96 : x
  2. Step 2: Convert to fraction form
    402,976.30/556,085.33 = 221,658.96/x
  3. Step 3: Cross multiply
    402,976.30x = 556,085.33 × 221,658.96
  4. Step 4: Simplify right side
    402,976.30x = 123,261,296,473.20
  5. Step 5: Solve for x
    x = 123,261,296,473.20/402,976.30
  6. Step 6: Final answer
    x = 305,877.28

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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.