Home / 281,146.21-387,987.37-153,824.54

Finding the Fourth Proportional to 281,146.21, 387,987.37 and 153,824.54

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Solution

The fourth proportional to 281,146.21, 387,987.37 and 153,824.54 is: 212,280.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,146.21 : 387,987.37 = 153,824.54 : x
  2. Step 2: Convert to fraction form
    281,146.21/387,987.37 = 153,824.54/x
  3. Step 3: Cross multiply
    281,146.21x = 387,987.37 × 153,824.54
  4. Step 4: Simplify right side
    281,146.21x = 59,681,976,391.56
  5. Step 5: Solve for x
    x = 59,681,976,391.56/281,146.21
  6. Step 6: Final answer
    x = 212,280.92

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1.5x scale

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.