Home / 378,946.27-522,942.64-209,176.75

Finding the Fourth Proportional to 378,946.27, 522,942.64 and 209,176.75

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Solution

The fourth proportional to 378,946.27, 522,942.64 and 209,176.75 is: 288,662.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,946.27 : 522,942.64 = 209,176.75 : x
  2. Step 2: Convert to fraction form
    378,946.27/522,942.64 = 209,176.75/x
  3. Step 3: Cross multiply
    378,946.27x = 522,942.64 × 209,176.75
  4. Step 4: Simplify right side
    378,946.27x = 109,387,441,871.62
  5. Step 5: Solve for x
    x = 109,387,441,871.62/378,946.27
  6. Step 6: Final answer
    x = 288,662.14

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1.5x scale

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.