Home / 378,933.72-522,927.46-209,166.63

Finding the Fourth Proportional to 378,933.72, 522,927.46 and 209,166.63

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Solution

The fourth proportional to 378,933.72, 522,927.46 and 209,166.63 is: 288,649.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,933.72 : 522,927.46 = 209,166.63 : x
  2. Step 2: Convert to fraction form
    378,933.72/522,927.46 = 209,166.63/x
  3. Step 3: Cross multiply
    378,933.72x = 522,927.46 × 209,166.63
  4. Step 4: Simplify right side
    378,933.72x = 109,378,974,542.66
  5. Step 5: Solve for x
    x = 109,378,974,542.66/378,933.72
  6. Step 6: Final answer
    x = 288,649.36

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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.