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Finding the Fourth Proportional to 281,246.38, 388,110.49 and 153,919.24

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Solution

The fourth proportional to 281,246.38, 388,110.49 and 153,919.24 is: 212,403.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,246.38 : 388,110.49 = 153,919.24 : x
  2. Step 2: Convert to fraction form
    281,246.38/388,110.49 = 153,919.24/x
  3. Step 3: Cross multiply
    281,246.38x = 388,110.49 × 153,919.24
  4. Step 4: Simplify right side
    281,246.38x = 59,737,670,301.75
  5. Step 5: Solve for x
    x = 59,737,670,301.75/281,246.38
  6. Step 6: Final answer
    x = 212,403.34

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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.