Home / 455,434.30-683,151.45-139,850.20

Finding the Fourth Proportional to 455,434.30, 683,151.45 and 139,850.20

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Solution

The fourth proportional to 455,434.30, 683,151.45 and 139,850.20 is: 209,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,434.30 : 683,151.45 = 139,850.20 : x
  2. Step 2: Convert to fraction form
    455,434.30/683,151.45 = 139,850.20/x
  3. Step 3: Cross multiply
    455,434.30x = 683,151.45 × 139,850.20
  4. Step 4: Simplify right side
    455,434.30x = 95,538,866,912.79
  5. Step 5: Solve for x
    x = 95,538,866,912.79/455,434.30
  6. Step 6: Final answer
    x = 209,775.30

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.