Home / 402,442.59-555,383.68-221,171.27

Finding the Fourth Proportional to 402,442.59, 555,383.68 and 221,171.27

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Solution

The fourth proportional to 402,442.59, 555,383.68 and 221,171.27 is: 305,223.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,442.59 : 555,383.68 = 221,171.27 : x
  2. Step 2: Convert to fraction form
    402,442.59/555,383.68 = 221,171.27/x
  3. Step 3: Cross multiply
    402,442.59x = 555,383.68 × 221,171.27
  4. Step 4: Simplify right side
    402,442.59x = 122,834,913,842.87
  5. Step 5: Solve for x
    x = 122,834,913,842.87/402,442.59
  6. Step 6: Final answer
    x = 305,223.45

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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.