Home / 380,305.87-524,801.28-208,190.55

Finding the Fourth Proportional to 380,305.87, 524,801.28 and 208,190.55

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Solution

The fourth proportional to 380,305.87, 524,801.28 and 208,190.55 is: 287,291.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,305.87 : 524,801.28 = 208,190.55 : x
  2. Step 2: Convert to fraction form
    380,305.87/524,801.28 = 208,190.55/x
  3. Step 3: Cross multiply
    380,305.87x = 524,801.28 × 208,190.55
  4. Step 4: Simplify right side
    380,305.87x = 109,258,667,123.90
  5. Step 5: Solve for x
    x = 109,258,667,123.90/380,305.87
  6. Step 6: Final answer
    x = 287,291.56

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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.