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Finding the Fourth Proportional to 443,059.20, 664,653.60 and 143,488.80

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Solution

The fourth proportional to 443,059.20, 664,653.60 and 143,488.80 is: 215,254.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,059.20 : 664,653.60 = 143,488.80 : x
  2. Step 2: Convert to fraction form
    443,059.20/664,653.60 = 143,488.80/x
  3. Step 3: Cross multiply
    443,059.20x = 664,653.60 × 143,488.80
  4. Step 4: Simplify right side
    443,059.20x = 95,370,347,479.68
  5. Step 5: Solve for x
    x = 95,370,347,479.68/443,059.20
  6. Step 6: Final answer
    x = 215,254.19

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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.