Home / 281,291.46-388,179.05-153,965.53

Finding the Fourth Proportional to 281,291.46, 388,179.05 and 153,965.53

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Solution

The fourth proportional to 281,291.46, 388,179.05 and 153,965.53 is: 212,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,291.46 : 388,179.05 = 153,965.53 : x
  2. Step 2: Convert to fraction form
    281,291.46/388,179.05 = 153,965.53/x
  3. Step 3: Cross multiply
    281,291.46x = 388,179.05 × 153,965.53
  4. Step 4: Simplify right side
    281,291.46x = 59,766,193,749.60
  5. Step 5: Solve for x
    x = 59,766,193,749.60/281,291.46
  6. Step 6: Final answer
    x = 212,470.70

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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.