Home / 378,743.42-522,667.72-208,977.55

Finding the Fourth Proportional to 378,743.42, 522,667.72 and 208,977.55

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Solution

The fourth proportional to 378,743.42, 522,667.72 and 208,977.55 is: 288,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,743.42 : 522,667.72 = 208,977.55 : x
  2. Step 2: Convert to fraction form
    378,743.42/522,667.72 = 208,977.55/x
  3. Step 3: Cross multiply
    378,743.42x = 522,667.72 × 208,977.55
  4. Step 4: Simplify right side
    378,743.42x = 109,225,818,544.24
  5. Step 5: Solve for x
    x = 109,225,818,544.24/378,743.42
  6. Step 6: Final answer
    x = 288,390.01

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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.