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Finding the Fourth Proportional to 281,381.40, 388,308.60 and 154,058.04

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Solution

The fourth proportional to 281,381.40, 388,308.60 and 154,058.04 is: 212,601.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,381.40 : 388,308.60 = 154,058.04 : x
  2. Step 2: Convert to fraction form
    281,381.40/388,308.60 = 154,058.04/x
  3. Step 3: Cross multiply
    281,381.40x = 388,308.60 × 154,058.04
  4. Step 4: Simplify right side
    281,381.40x = 59,822,061,831.14
  5. Step 5: Solve for x
    x = 59,822,061,831.14/281,381.40
  6. Step 6: Final answer
    x = 212,601.34

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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.