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Finding the Fourth Proportional to 281,088.92, 387,902.58 and 153,764.48

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Solution

The fourth proportional to 281,088.92, 387,902.58 and 153,764.48 is: 212,194.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,088.92 : 387,902.58 = 153,764.48 : x
  2. Step 2: Convert to fraction form
    281,088.92/387,902.58 = 153,764.48/x
  3. Step 3: Cross multiply
    281,088.92x = 387,902.58 × 153,764.48
  4. Step 4: Simplify right side
    281,088.92x = 59,645,638,504.36
  5. Step 5: Solve for x
    x = 59,645,638,504.36/281,088.92
  6. Step 6: Final answer
    x = 212,194.91

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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.