Home / 380,306.12-524,801.62-208,190.80

Finding the Fourth Proportional to 380,306.12, 524,801.62 and 208,190.80

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Solution

The fourth proportional to 380,306.12, 524,801.62 and 208,190.80 is: 287,291.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,306.12 : 524,801.62 = 208,190.80 : x
  2. Step 2: Convert to fraction form
    380,306.12/524,801.62 = 208,190.80/x
  3. Step 3: Cross multiply
    380,306.12x = 524,801.62 × 208,190.80
  4. Step 4: Simplify right side
    380,306.12x = 109,258,869,109.10
  5. Step 5: Solve for x
    x = 109,258,869,109.10/380,306.12
  6. Step 6: Final answer
    x = 287,291.90

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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.