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Finding the Fourth Proportional to 286,819.20, 430,228.80 and 220,593.60

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Solution

The fourth proportional to 286,819.20, 430,228.80 and 220,593.60 is: 330,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,819.20 : 430,228.80 = 220,593.60 : x
  2. Step 2: Convert to fraction form
    286,819.20/430,228.80 = 220,593.60/x
  3. Step 3: Cross multiply
    286,819.20x = 430,228.80 × 220,593.60
  4. Step 4: Simplify right side
    286,819.20x = 94,905,719,815.68
  5. Step 5: Solve for x
    x = 94,905,719,815.68/286,819.20
  6. Step 6: Final answer
    x = 330,890.40

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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.