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Finding the Fourth Proportional to 207,012.20, 310,518.30 and 193,890.20

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Solution

The fourth proportional to 207,012.20, 310,518.30 and 193,890.20 is: 290,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,012.20 : 310,518.30 = 193,890.20 : x
  2. Step 2: Convert to fraction form
    207,012.20/310,518.30 = 193,890.20/x
  3. Step 3: Cross multiply
    207,012.20x = 310,518.30 × 193,890.20
  4. Step 4: Simplify right side
    207,012.20x = 60,206,455,290.66
  5. Step 5: Solve for x
    x = 60,206,455,290.66/207,012.20
  6. Step 6: Final answer
    x = 290,835.30

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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.