Home / 378,823.53-522,775.40-209,056.44

Finding the Fourth Proportional to 378,823.53, 522,775.40 and 209,056.44

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Solution

The fourth proportional to 378,823.53, 522,775.40 and 209,056.44 is: 288,497.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,823.53 : 522,775.40 = 209,056.44 : x
  2. Step 2: Convert to fraction form
    378,823.53/522,775.40 = 209,056.44/x
  3. Step 3: Cross multiply
    378,823.53x = 522,775.40 × 209,056.44
  4. Step 4: Simplify right side
    378,823.53x = 109,289,562,214.00
  5. Step 5: Solve for x
    x = 109,289,562,214.00/378,823.53
  6. Step 6: Final answer
    x = 288,497.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.