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Finding the Fourth Proportional to 259,489.70, 357,777.66 and 213,388.28

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Solution

The fourth proportional to 259,489.70, 357,777.66 and 213,388.28 is: 294,214.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,489.70 : 357,777.66 = 213,388.28 : x
  2. Step 2: Convert to fraction form
    259,489.70/357,777.66 = 213,388.28/x
  3. Step 3: Cross multiply
    259,489.70x = 357,777.66 × 213,388.28
  4. Step 4: Simplify right side
    259,489.70x = 76,345,559,489.82
  5. Step 5: Solve for x
    x = 76,345,559,489.82/259,489.70
  6. Step 6: Final answer
    x = 294,214.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.