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Finding the Fourth Proportional to 281,420.79, 388,361.31 and 152,360.62

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Solution

The fourth proportional to 281,420.79, 388,361.31 and 152,360.62 is: 210,257.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,420.79 : 388,361.31 = 152,360.62 : x
  2. Step 2: Convert to fraction form
    281,420.79/388,361.31 = 152,360.62/x
  3. Step 3: Cross multiply
    281,420.79x = 388,361.31 × 152,360.62
  4. Step 4: Simplify right side
    281,420.79x = 59,170,969,975.61
  5. Step 5: Solve for x
    x = 59,170,969,975.61/281,420.79
  6. Step 6: Final answer
    x = 210,257.99

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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.