Home / 281,270.61-388,138.55-153,921.60

Finding the Fourth Proportional to 281,270.61, 388,138.55 and 153,921.60

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Solution

The fourth proportional to 281,270.61, 388,138.55 and 153,921.60 is: 212,403.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,270.61 : 388,138.55 = 153,921.60 : x
  2. Step 2: Convert to fraction form
    281,270.61/388,138.55 = 153,921.60/x
  3. Step 3: Cross multiply
    281,270.61x = 388,138.55 × 153,921.60
  4. Step 4: Simplify right side
    281,270.61x = 59,742,905,868.07
  5. Step 5: Solve for x
    x = 59,742,905,868.07/281,270.61
  6. Step 6: Final answer
    x = 212,403.66

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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.