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Finding the Fourth Proportional to 285,105.04, 427,800.12 and 127,446.64

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Solution

The fourth proportional to 285,105.04, 427,800.12 and 127,446.64 is: 191,233.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,105.04 : 427,800.12 = 127,446.64 : x
  2. Step 2: Convert to fraction form
    285,105.04/427,800.12 = 127,446.64/x
  3. Step 3: Cross multiply
    285,105.04x = 427,800.12 × 127,446.64
  4. Step 4: Simplify right side
    285,105.04x = 54,521,687,885.60
  5. Step 5: Solve for x
    x = 54,521,687,885.60/285,105.04
  6. Step 6: Final answer
    x = 191,233.69

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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.