Home / 281,085.60-421,336.80-154,531.20

Finding the Fourth Proportional to 281,085.60, 421,336.80 and 154,531.20

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Solution

The fourth proportional to 281,085.60, 421,336.80 and 154,531.20 is: 231,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,085.60 : 421,336.80 = 154,531.20 : x
  2. Step 2: Convert to fraction form
    281,085.60/421,336.80 = 154,531.20/x
  3. Step 3: Cross multiply
    281,085.60x = 421,336.80 × 154,531.20
  4. Step 4: Simplify right side
    281,085.60x = 65,109,681,308.16
  5. Step 5: Solve for x
    x = 65,109,681,308.16/281,085.60
  6. Step 6: Final answer
    x = 231,636.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.