Home / 353,785.20-530,742.60-143,444.40

Finding the Fourth Proportional to 353,785.20, 530,742.60 and 143,444.40

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Solution

The fourth proportional to 353,785.20, 530,742.60 and 143,444.40 is: 215,192.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,785.20 : 530,742.60 = 143,444.40 : x
  2. Step 2: Convert to fraction form
    353,785.20/530,742.60 = 143,444.40/x
  3. Step 3: Cross multiply
    353,785.20x = 530,742.60 × 143,444.40
  4. Step 4: Simplify right side
    353,785.20x = 76,132,053,811.44
  5. Step 5: Solve for x
    x = 76,132,053,811.44/353,785.20
  6. Step 6: Final answer
    x = 215,192.87

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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.