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Finding the Fourth Proportional to 207,260.20, 310,890.30 and 191,513.80

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Solution

The fourth proportional to 207,260.20, 310,890.30 and 191,513.80 is: 287,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,260.20 : 310,890.30 = 191,513.80 : x
  2. Step 2: Convert to fraction form
    207,260.20/310,890.30 = 191,513.80/x
  3. Step 3: Cross multiply
    207,260.20x = 310,890.30 × 191,513.80
  4. Step 4: Simplify right side
    207,260.20x = 59,539,782,736.14
  5. Step 5: Solve for x
    x = 59,539,782,736.14/207,260.20
  6. Step 6: Final answer
    x = 287,270.70

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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.