Home / 281,135.64-387,976.50-153,811.29

Finding the Fourth Proportional to 281,135.64, 387,976.50 and 153,811.29

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Solution

The fourth proportional to 281,135.64, 387,976.50 and 153,811.29 is: 212,264.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,135.64 : 387,976.50 = 153,811.29 : x
  2. Step 2: Convert to fraction form
    281,135.64/387,976.50 = 153,811.29/x
  3. Step 3: Cross multiply
    281,135.64x = 387,976.50 × 153,811.29
  4. Step 4: Simplify right side
    281,135.64x = 59,675,165,954.69
  5. Step 5: Solve for x
    x = 59,675,165,954.69/281,135.64
  6. Step 6: Final answer
    x = 212,264.68

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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.