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Finding the Fourth Proportional to 297,065.88, 445,613.94 and 86,719.68

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Solution

The fourth proportional to 297,065.88, 445,613.94 and 86,719.68 is: 130,083.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,065.88 : 445,613.94 = 86,719.68 : x
  2. Step 2: Convert to fraction form
    297,065.88/445,613.94 = 86,719.68/x
  3. Step 3: Cross multiply
    297,065.88x = 445,613.94 × 86,719.68
  4. Step 4: Simplify right side
    297,065.88x = 38,643,498,280.34
  5. Step 5: Solve for x
    x = 38,643,498,280.34/297,065.88
  6. Step 6: Final answer
    x = 130,083.93

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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.