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Finding the Fourth Proportional to 402,177.69, 555,011.73 and 220,906.17

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Solution

The fourth proportional to 402,177.69, 555,011.73 and 220,906.17 is: 304,854.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,177.69 : 555,011.73 = 220,906.17 : x
  2. Step 2: Convert to fraction form
    402,177.69/555,011.73 = 220,906.17/x
  3. Step 3: Cross multiply
    402,177.69x = 555,011.73 × 220,906.17
  4. Step 4: Simplify right side
    402,177.69x = 122,605,515,579.37
  5. Step 5: Solve for x
    x = 122,605,515,579.37/402,177.69
  6. Step 6: Final answer
    x = 304,854.09

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1.5x scale

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.