Home / 405,246.39-559,241.77-221,488.68

Finding the Fourth Proportional to 405,246.39, 559,241.77 and 221,488.68

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Solution

The fourth proportional to 405,246.39, 559,241.77 and 221,488.68 is: 305,655.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,246.39 : 559,241.77 = 221,488.68 : x
  2. Step 2: Convert to fraction form
    405,246.39/559,241.77 = 221,488.68/x
  3. Step 3: Cross multiply
    405,246.39x = 559,241.77 × 221,488.68
  4. Step 4: Simplify right side
    405,246.39x = 123,865,720,251.16
  5. Step 5: Solve for x
    x = 123,865,720,251.16/405,246.39
  6. Step 6: Final answer
    x = 305,655.33

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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.