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Finding the Fourth Proportional to 281,588.90, 388,594.06 and 154,264.55

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Solution

The fourth proportional to 281,588.90, 388,594.06 and 154,264.55 is: 212,885.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,588.90 : 388,594.06 = 154,264.55 : x
  2. Step 2: Convert to fraction form
    281,588.90/388,594.06 = 154,264.55/x
  3. Step 3: Cross multiply
    281,588.90x = 388,594.06 × 154,264.55
  4. Step 4: Simplify right side
    281,588.90x = 59,946,285,469.94
  5. Step 5: Solve for x
    x = 59,946,285,469.94/281,588.90
  6. Step 6: Final answer
    x = 212,885.83

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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.