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Finding the Fourth Proportional to 262,397.40, 393,644.70 and 84,910.20

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Solution

The fourth proportional to 262,397.40, 393,644.70 and 84,910.20 is: 127,381.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,397.40 : 393,644.70 = 84,910.20 : x
  2. Step 2: Convert to fraction form
    262,397.40/393,644.70 = 84,910.20/x
  3. Step 3: Cross multiply
    262,397.40x = 393,644.70 × 84,910.20
  4. Step 4: Simplify right side
    262,397.40x = 33,424,450,205.94
  5. Step 5: Solve for x
    x = 33,424,450,205.94/262,397.40
  6. Step 6: Final answer
    x = 127,381.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.