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Finding the Fourth Proportional to 281,635.62, 388,655.55 and 152,576.61

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Solution

The fourth proportional to 281,635.62, 388,655.55 and 152,576.61 is: 210,554.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,635.62 : 388,655.55 = 152,576.61 : x
  2. Step 2: Convert to fraction form
    281,635.62/388,655.55 = 152,576.61/x
  3. Step 3: Cross multiply
    281,635.62x = 388,655.55 × 152,576.61
  4. Step 4: Simplify right side
    281,635.62x = 59,299,747,649.10
  5. Step 5: Solve for x
    x = 59,299,747,649.10/281,635.62
  6. Step 6: Final answer
    x = 210,554.86

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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.