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Finding the Fourth Proportional to 245,561.00, 338,869.17 and 143,646.80

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Solution

The fourth proportional to 245,561.00, 338,869.17 and 143,646.80 is: 198,229.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,561.00 : 338,869.17 = 143,646.80 : x
  2. Step 2: Convert to fraction form
    245,561.00/338,869.17 = 143,646.80/x
  3. Step 3: Cross multiply
    245,561.00x = 338,869.17 × 143,646.80
  4. Step 4: Simplify right side
    245,561.00x = 48,677,470,194.81
  5. Step 5: Solve for x
    x = 48,677,470,194.81/245,561.00
  6. Step 6: Final answer
    x = 198,229.65

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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.