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Finding the Fourth Proportional to 216,768.39, 325,123.88 and 98,412.51

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Solution

The fourth proportional to 216,768.39, 325,123.88 and 98,412.51 is: 147,605.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,768.39 : 325,123.88 = 98,412.51 : x
  2. Step 2: Convert to fraction form
    216,768.39/325,123.88 = 98,412.51/x
  3. Step 3: Cross multiply
    216,768.39x = 325,123.88 × 98,412.51
  4. Step 4: Simplify right side
    216,768.39x = 31,996,256,599.68
  5. Step 5: Solve for x
    x = 31,996,256,599.68/216,768.39
  6. Step 6: Final answer
    x = 147,605.73

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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.