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Finding the Fourth Proportional to 281,114.70, 387,941.85 and 153,792.42

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Solution

The fourth proportional to 281,114.70, 387,941.85 and 153,792.42 is: 212,235.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,114.70 : 387,941.85 = 153,792.42 : x
  2. Step 2: Convert to fraction form
    281,114.70/387,941.85 = 153,792.42/x
  3. Step 3: Cross multiply
    281,114.70x = 387,941.85 × 153,792.42
  4. Step 4: Simplify right side
    281,114.70x = 59,662,515,930.78
  5. Step 5: Solve for x
    x = 59,662,515,930.78/281,114.70
  6. Step 6: Final answer
    x = 212,235.49

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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.