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Finding the Fourth Proportional to 262,607.40, 393,911.10 and 129,747.15

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Solution

The fourth proportional to 262,607.40, 393,911.10 and 129,747.15 is: 194,620.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,607.40 : 393,911.10 = 129,747.15 : x
  2. Step 2: Convert to fraction form
    262,607.40/393,911.10 = 129,747.15/x
  3. Step 3: Cross multiply
    262,607.40x = 393,911.10 × 129,747.15
  4. Step 4: Simplify right side
    262,607.40x = 51,108,842,578.37
  5. Step 5: Solve for x
    x = 51,108,842,578.37/262,607.40
  6. Step 6: Final answer
    x = 194,620.73

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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.