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Finding the Fourth Proportional to 306,345.87, 422,754.95 and 168,521.83

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Solution

The fourth proportional to 306,345.87, 422,754.95 and 168,521.83 is: 232,558.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,345.87 : 422,754.95 = 168,521.83 : x
  2. Step 2: Convert to fraction form
    306,345.87/422,754.95 = 168,521.83/x
  3. Step 3: Cross multiply
    306,345.87x = 422,754.95 × 168,521.83
  4. Step 4: Simplify right side
    306,345.87x = 71,243,437,179.98
  5. Step 5: Solve for x
    x = 71,243,437,179.98/306,345.87
  6. Step 6: Final answer
    x = 232,558.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.