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Finding the Fourth Proportional to 384,660.60, 530,842.23 and 212,589.72

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Solution

The fourth proportional to 384,660.60, 530,842.23 and 212,589.72 is: 293,379.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,660.60 : 530,842.23 = 212,589.72 : x
  2. Step 2: Convert to fraction form
    384,660.60/530,842.23 = 212,589.72/x
  3. Step 3: Cross multiply
    384,660.60x = 530,842.23 × 212,589.72
  4. Step 4: Simplify right side
    384,660.60x = 112,851,601,039.88
  5. Step 5: Solve for x
    x = 112,851,601,039.88/384,660.60
  6. Step 6: Final answer
    x = 293,379.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.