Home / 402,494.16-555,455.26-221,212.52

Finding the Fourth Proportional to 402,494.16, 555,455.26 and 221,212.52

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Solution

The fourth proportional to 402,494.16, 555,455.26 and 221,212.52 is: 305,280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,494.16 : 555,455.26 = 221,212.52 : x
  2. Step 2: Convert to fraction form
    402,494.16/555,455.26 = 221,212.52/x
  3. Step 3: Cross multiply
    402,494.16x = 555,455.26 × 221,212.52
  4. Step 4: Simplify right side
    402,494.16x = 122,873,653,928.52
  5. Step 5: Solve for x
    x = 122,873,653,928.52/402,494.16
  6. Step 6: Final answer
    x = 305,280.59

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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.