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Finding the Fourth Proportional to 213,088.98, 319,549.92 and 79,896.63

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Solution

The fourth proportional to 213,088.98, 319,549.92 and 79,896.63 is: 119,813.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,088.98 : 319,549.92 = 79,896.63 : x
  2. Step 2: Convert to fraction form
    213,088.98/319,549.92 = 79,896.63/x
  3. Step 3: Cross multiply
    213,088.98x = 319,549.92 × 79,896.63
  4. Step 4: Simplify right side
    213,088.98x = 25,530,961,724.77
  5. Step 5: Solve for x
    x = 25,530,961,724.77/213,088.98
  6. Step 6: Final answer
    x = 119,813.62

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1.5x scale

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.