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Finding the Fourth Proportional to 279,852.76, 386,051.31 and 177,703.45

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Solution

The fourth proportional to 279,852.76, 386,051.31 and 177,703.45 is: 245,138.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,852.76 : 386,051.31 = 177,703.45 : x
  2. Step 2: Convert to fraction form
    279,852.76/386,051.31 = 177,703.45/x
  3. Step 3: Cross multiply
    279,852.76x = 386,051.31 × 177,703.45
  4. Step 4: Simplify right side
    279,852.76x = 68,602,649,664.02
  5. Step 5: Solve for x
    x = 68,602,649,664.02/279,852.76
  6. Step 6: Final answer
    x = 245,138.37

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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.