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Finding the Fourth Proportional to 263,298.80, 394,948.20 and 210,810.80

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Solution

The fourth proportional to 263,298.80, 394,948.20 and 210,810.80 is: 316,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,298.80 : 394,948.20 = 210,810.80 : x
  2. Step 2: Convert to fraction form
    263,298.80/394,948.20 = 210,810.80/x
  3. Step 3: Cross multiply
    263,298.80x = 394,948.20 × 210,810.80
  4. Step 4: Simplify right side
    263,298.80x = 83,259,346,000.56
  5. Step 5: Solve for x
    x = 83,259,346,000.56/263,298.80
  6. Step 6: Final answer
    x = 316,216.20

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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.