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Finding the Fourth Proportional to 462,361.78, 693,542.67 and 129,937.78

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Solution

The fourth proportional to 462,361.78, 693,542.67 and 129,937.78 is: 194,906.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,361.78 : 693,542.67 = 129,937.78 : x
  2. Step 2: Convert to fraction form
    462,361.78/693,542.67 = 129,937.78/x
  3. Step 3: Cross multiply
    462,361.78x = 693,542.67 × 129,937.78
  4. Step 4: Simplify right side
    462,361.78x = 90,117,395,985.63
  5. Step 5: Solve for x
    x = 90,117,395,985.63/462,361.78
  6. Step 6: Final answer
    x = 194,906.67

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Similar ratio
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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.