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Finding the Fourth Proportional to 353,858.16, 530,314.34 and 129,007.38

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Solution

The fourth proportional to 353,858.16, 530,314.34 and 129,007.38 is: 193,338.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,858.16 : 530,314.34 = 129,007.38 : x
  2. Step 2: Convert to fraction form
    353,858.16/530,314.34 = 129,007.38/x
  3. Step 3: Cross multiply
    353,858.16x = 530,314.34 × 129,007.38
  4. Step 4: Simplify right side
    353,858.16x = 68,414,462,934.79
  5. Step 5: Solve for x
    x = 68,414,462,934.79/353,858.16
  6. Step 6: Final answer
    x = 193,338.66

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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.