Home / 430,893.60-645,941.88-220,066.80

Finding the Fourth Proportional to 430,893.60, 645,941.88 and 220,066.80

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Solution

The fourth proportional to 430,893.60, 645,941.88 and 220,066.80 is: 329,896.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,893.60 : 645,941.88 = 220,066.80 : x
  2. Step 2: Convert to fraction form
    430,893.60/645,941.88 = 220,066.80/x
  3. Step 3: Cross multiply
    430,893.60x = 645,941.88 × 220,066.80
  4. Step 4: Simplify right side
    430,893.60x = 142,150,362,517.58
  5. Step 5: Solve for x
    x = 142,150,362,517.58/430,893.60
  6. Step 6: Final answer
    x = 329,896.67

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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.