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Finding the Fourth Proportional to 402,852.36, 555,939.96 and 219,092.64

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Solution

The fourth proportional to 402,852.36, 555,939.96 and 219,092.64 is: 302,349.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,852.36 : 555,939.96 = 219,092.64 : x
  2. Step 2: Convert to fraction form
    402,852.36/555,939.96 = 219,092.64/x
  3. Step 3: Cross multiply
    402,852.36x = 555,939.96 × 219,092.64
  4. Step 4: Simplify right side
    402,852.36x = 121,802,353,517.89
  5. Step 5: Solve for x
    x = 121,802,353,517.89/402,852.36
  6. Step 6: Final answer
    x = 302,349.86

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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.