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Finding the Fourth Proportional to 281,425.51, 388,363.35 and 154,101.16

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Solution

The fourth proportional to 281,425.51, 388,363.35 and 154,101.16 is: 212,657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,425.51 : 388,363.35 = 154,101.16 : x
  2. Step 2: Convert to fraction form
    281,425.51/388,363.35 = 154,101.16/x
  3. Step 3: Cross multiply
    281,425.51x = 388,363.35 × 154,101.16
  4. Step 4: Simplify right side
    281,425.51x = 59,847,242,736.49
  5. Step 5: Solve for x
    x = 59,847,242,736.49/281,425.51
  6. Step 6: Final answer
    x = 212,657.49

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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.