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Finding the Fourth Proportional to 212,446.69, 318,678.82 and 62,686.97

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Solution

The fourth proportional to 212,446.69, 318,678.82 and 62,686.97 is: 94,033.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,446.69 : 318,678.82 = 62,686.97 : x
  2. Step 2: Convert to fraction form
    212,446.69/318,678.82 = 62,686.97/x
  3. Step 3: Cross multiply
    212,446.69x = 318,678.82 × 62,686.97
  4. Step 4: Simplify right side
    212,446.69x = 19,977,010,383.22
  5. Step 5: Solve for x
    x = 19,977,010,383.22/212,446.69
  6. Step 6: Final answer
    x = 94,033.05

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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.