Home / 281,106.90-387,930.33-153,787.86

Finding the Fourth Proportional to 281,106.90, 387,930.33 and 153,787.86

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Solution

The fourth proportional to 281,106.90, 387,930.33 and 153,787.86 is: 212,228.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,106.90 : 387,930.33 = 153,787.86 : x
  2. Step 2: Convert to fraction form
    281,106.90/387,930.33 = 153,787.86/x
  3. Step 3: Cross multiply
    281,106.90x = 387,930.33 × 153,787.86
  4. Step 4: Simplify right side
    281,106.90x = 59,658,975,279.79
  5. Step 5: Solve for x
    x = 59,658,975,279.79/281,106.90
  6. Step 6: Final answer
    x = 212,228.78

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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.