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Finding the Fourth Proportional to 213,611.93, 320,436.11 and 55,840.13

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Solution

The fourth proportional to 213,611.93, 320,436.11 and 55,840.13 is: 83,764.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,611.93 : 320,436.11 = 55,840.13 : x
  2. Step 2: Convert to fraction form
    213,611.93/320,436.11 = 55,840.13/x
  3. Step 3: Cross multiply
    213,611.93x = 320,436.11 × 55,840.13
  4. Step 4: Simplify right side
    213,611.93x = 17,893,192,576.51
  5. Step 5: Solve for x
    x = 17,893,192,576.51/213,611.93
  6. Step 6: Final answer
    x = 83,764.95

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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.