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Finding the Fourth Proportional to 402,023.88, 554,799.87 and 220,743.45

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Solution

The fourth proportional to 402,023.88, 554,799.87 and 220,743.45 is: 304,629.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,023.88 : 554,799.87 = 220,743.45 : x
  2. Step 2: Convert to fraction form
    402,023.88/554,799.87 = 220,743.45/x
  3. Step 3: Cross multiply
    402,023.88x = 554,799.87 × 220,743.45
  4. Step 4: Simplify right side
    402,023.88x = 122,468,437,363.35
  5. Step 5: Solve for x
    x = 122,468,437,363.35/402,023.88
  6. Step 6: Final answer
    x = 304,629.76

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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.