Home / 402,819.73-555,880.12-221,531.66

Finding the Fourth Proportional to 402,819.73, 555,880.12 and 221,531.66

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Solution

The fourth proportional to 402,819.73, 555,880.12 and 221,531.66 is: 305,707.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,819.73 : 555,880.12 = 221,531.66 : x
  2. Step 2: Convert to fraction form
    402,819.73/555,880.12 = 221,531.66/x
  3. Step 3: Cross multiply
    402,819.73x = 555,880.12 × 221,531.66
  4. Step 4: Simplify right side
    402,819.73x = 123,145,045,744.60
  5. Step 5: Solve for x
    x = 123,145,045,744.60/402,819.73
  6. Step 6: Final answer
    x = 305,707.58

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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.