Home / 281,531.60-388,523.28-154,207.19

Finding the Fourth Proportional to 281,531.60, 388,523.28 and 154,207.19

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Solution

The fourth proportional to 281,531.60, 388,523.28 and 154,207.19 is: 212,811.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,531.60 : 388,523.28 = 154,207.19 : x
  2. Step 2: Convert to fraction form
    281,531.60/388,523.28 = 154,207.19/x
  3. Step 3: Cross multiply
    281,531.60x = 388,523.28 × 154,207.19
  4. Step 4: Simplify right side
    281,531.60x = 59,913,084,807.97
  5. Step 5: Solve for x
    x = 59,913,084,807.97/281,531.60
  6. Step 6: Final answer
    x = 212,811.23

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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.