Home / 430,622.10-645,933.15-131,100.30

Finding the Fourth Proportional to 430,622.10, 645,933.15 and 131,100.30

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Solution

The fourth proportional to 430,622.10, 645,933.15 and 131,100.30 is: 196,650.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,622.10 : 645,933.15 = 131,100.30 : x
  2. Step 2: Convert to fraction form
    430,622.10/645,933.15 = 131,100.30/x
  3. Step 3: Cross multiply
    430,622.10x = 645,933.15 × 131,100.30
  4. Step 4: Simplify right side
    430,622.10x = 84,682,029,744.95
  5. Step 5: Solve for x
    x = 84,682,029,744.95/430,622.10
  6. Step 6: Final answer
    x = 196,650.45

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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.