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Finding the Fourth Proportional to 245,504.69, 338,745.67 and 143,510.42

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Solution

The fourth proportional to 245,504.69, 338,745.67 and 143,510.42 is: 198,014.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,504.69 : 338,745.67 = 143,510.42 : x
  2. Step 2: Convert to fraction form
    245,504.69/338,745.67 = 143,510.42/x
  3. Step 3: Cross multiply
    245,504.69x = 338,745.67 × 143,510.42
  4. Step 4: Simplify right side
    245,504.69x = 48,613,533,862.97
  5. Step 5: Solve for x
    x = 48,613,533,862.97/245,504.69
  6. Step 6: Final answer
    x = 198,014.69

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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.