Home / 378,055.02-521,715.60-208,289.14

Finding the Fourth Proportional to 378,055.02, 521,715.60 and 208,289.14

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Solution

The fourth proportional to 378,055.02, 521,715.60 and 208,289.14 is: 287,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,055.02 : 521,715.60 = 208,289.14 : x
  2. Step 2: Convert to fraction form
    378,055.02/521,715.60 = 208,289.14/x
  3. Step 3: Cross multiply
    378,055.02x = 521,715.60 × 208,289.14
  4. Step 4: Simplify right side
    378,055.02x = 108,667,693,648.58
  5. Step 5: Solve for x
    x = 108,667,693,648.58/378,055.02
  6. Step 6: Final answer
    x = 287,438.83

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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.