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Finding the Fourth Proportional to 402,313.73, 555,202.71 and 221,037.39

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Solution

The fourth proportional to 402,313.73, 555,202.71 and 221,037.39 is: 305,036.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,313.73 : 555,202.71 = 221,037.39 : x
  2. Step 2: Convert to fraction form
    402,313.73/555,202.71 = 221,037.39/x
  3. Step 3: Cross multiply
    402,313.73x = 555,202.71 × 221,037.39
  4. Step 4: Simplify right side
    402,313.73x = 122,720,557,939.33
  5. Step 5: Solve for x
    x = 122,720,557,939.33/402,313.73
  6. Step 6: Final answer
    x = 305,036.97

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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.