Home / 378,936.73-522,931.59-209,169.64

Finding the Fourth Proportional to 378,936.73, 522,931.59 and 209,169.64

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Solution

The fourth proportional to 378,936.73, 522,931.59 and 209,169.64 is: 288,653.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,936.73 : 522,931.59 = 209,169.64 : x
  2. Step 2: Convert to fraction form
    378,936.73/522,931.59 = 209,169.64/x
  3. Step 3: Cross multiply
    378,936.73x = 522,931.59 × 209,169.64
  4. Step 4: Simplify right side
    378,936.73x = 109,381,412,424.93
  5. Step 5: Solve for x
    x = 109,381,412,424.93/378,936.73
  6. Step 6: Final answer
    x = 288,653.50

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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.