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Finding the Fourth Proportional to 402,213.79, 555,059.55 and 220,929.92

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Solution

The fourth proportional to 402,213.79, 555,059.55 and 220,929.92 is: 304,885.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,213.79 : 555,059.55 = 220,929.92 : x
  2. Step 2: Convert to fraction form
    402,213.79/555,059.55 = 220,929.92/x
  3. Step 3: Cross multiply
    402,213.79x = 555,059.55 × 220,929.92
  4. Step 4: Simplify right side
    402,213.79x = 122,629,261,976.74
  5. Step 5: Solve for x
    x = 122,629,261,976.74/402,213.79
  6. Step 6: Final answer
    x = 304,885.77

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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.