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Finding the Fourth Proportional to 285,012.21, 427,276.89 and 124,966.86

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Solution

The fourth proportional to 285,012.21, 427,276.89 and 124,966.86 is: 187,344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,012.21 : 427,276.89 = 124,966.86 : x
  2. Step 2: Convert to fraction form
    285,012.21/427,276.89 = 124,966.86/x
  3. Step 3: Cross multiply
    285,012.21x = 427,276.89 × 124,966.86
  4. Step 4: Simplify right side
    285,012.21x = 53,395,451,293.87
  5. Step 5: Solve for x
    x = 53,395,451,293.87/285,012.21
  6. Step 6: Final answer
    x = 187,344.43

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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.