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Finding the Fourth Proportional to 357,357.36, 493,383.94 and 221,536.46

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Solution

The fourth proportional to 357,357.36, 493,383.94 and 221,536.46 is: 305,863.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,357.36 : 493,383.94 = 221,536.46 : x
  2. Step 2: Convert to fraction form
    357,357.36/493,383.94 = 221,536.46/x
  3. Step 3: Cross multiply
    357,357.36x = 493,383.94 × 221,536.46
  4. Step 4: Simplify right side
    357,357.36x = 109,302,531,488.45
  5. Step 5: Solve for x
    x = 109,302,531,488.45/357,357.36
  6. Step 6: Final answer
    x = 305,863.38

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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.