Home / 443,059.20-664,588.80-256,435.20

Finding the Fourth Proportional to 443,059.20, 664,588.80 and 256,435.20

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Solution

The fourth proportional to 443,059.20, 664,588.80 and 256,435.20 is: 384,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,059.20 : 664,588.80 = 256,435.20 : x
  2. Step 2: Convert to fraction form
    443,059.20/664,588.80 = 256,435.20/x
  3. Step 3: Cross multiply
    443,059.20x = 664,588.80 × 256,435.20
  4. Step 4: Simplify right side
    443,059.20x = 170,423,961,845.76
  5. Step 5: Solve for x
    x = 170,423,961,845.76/443,059.20
  6. Step 6: Final answer
    x = 384,652.80

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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.