Home / 403,013.82-556,159.04-221,721.86

Finding the Fourth Proportional to 403,013.82, 556,159.04 and 221,721.86

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Solution

The fourth proportional to 403,013.82, 556,159.04 and 221,721.86 is: 305,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,013.82 : 556,159.04 = 221,721.86 : x
  2. Step 2: Convert to fraction form
    403,013.82/556,159.04 = 221,721.86/x
  3. Step 3: Cross multiply
    403,013.82x = 556,159.04 × 221,721.86
  4. Step 4: Simplify right side
    403,013.82x = 123,312,612,915.21
  5. Step 5: Solve for x
    x = 123,312,612,915.21/403,013.82
  6. Step 6: Final answer
    x = 305,976.14

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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.