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Finding the Fourth Proportional to 265,215.80, 397,823.70 and 202,230.20

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Solution

The fourth proportional to 265,215.80, 397,823.70 and 202,230.20 is: 303,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,215.80 : 397,823.70 = 202,230.20 : x
  2. Step 2: Convert to fraction form
    265,215.80/397,823.70 = 202,230.20/x
  3. Step 3: Cross multiply
    265,215.80x = 397,823.70 × 202,230.20
  4. Step 4: Simplify right side
    265,215.80x = 80,451,966,415.74
  5. Step 5: Solve for x
    x = 80,451,966,415.74/265,215.80
  6. Step 6: Final answer
    x = 303,345.30

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Similar ratio
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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.