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Finding the Fourth Proportional to 245,805.17, 368,712.61 and 77,321.93

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Solution

The fourth proportional to 245,805.17, 368,712.61 and 77,321.93 is: 115,984.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,805.17 : 368,712.61 = 77,321.93 : x
  2. Step 2: Convert to fraction form
    245,805.17/368,712.61 = 77,321.93/x
  3. Step 3: Cross multiply
    245,805.17x = 368,712.61 × 77,321.93
  4. Step 4: Simplify right side
    245,805.17x = 28,509,568,583.67
  5. Step 5: Solve for x
    x = 28,509,568,583.67/245,805.17
  6. Step 6: Final answer
    x = 115,984.42

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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.