Home / 281,286.10-388,174.17-153,960.58

Finding the Fourth Proportional to 281,286.10, 388,174.17 and 153,960.58

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Solution

The fourth proportional to 281,286.10, 388,174.17 and 153,960.58 is: 212,465.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,286.10 : 388,174.17 = 153,960.58 : x
  2. Step 2: Convert to fraction form
    281,286.10/388,174.17 = 153,960.58/x
  3. Step 3: Cross multiply
    281,286.10x = 388,174.17 × 153,960.58
  4. Step 4: Simplify right side
    281,286.10x = 59,763,520,354.22
  5. Step 5: Solve for x
    x = 59,763,520,354.22/281,286.10
  6. Step 6: Final answer
    x = 212,465.25

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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.