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Finding the Fourth Proportional to 210,338.80, 314,893.80 and 188,220.40

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Solution

The fourth proportional to 210,338.80, 314,893.80 and 188,220.40 is: 281,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,338.80 : 314,893.80 = 188,220.40 : x
  2. Step 2: Convert to fraction form
    210,338.80/314,893.80 = 188,220.40/x
  3. Step 3: Cross multiply
    210,338.80x = 314,893.80 × 188,220.40
  4. Step 4: Simplify right side
    210,338.80x = 59,269,436,993.52
  5. Step 5: Solve for x
    x = 59,269,436,993.52/210,338.80
  6. Step 6: Final answer
    x = 281,780.81

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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.