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Finding the Fourth Proportional to 245,816.64, 339,672.96 and 212,224.32

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Solution

The fourth proportional to 245,816.64, 339,672.96 and 212,224.32 is: 293,254.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,816.64 : 339,672.96 = 212,224.32 : x
  2. Step 2: Convert to fraction form
    245,816.64/339,672.96 = 212,224.32/x
  3. Step 3: Cross multiply
    245,816.64x = 339,672.96 × 212,224.32
  4. Step 4: Simplify right side
    245,816.64x = 72,086,862,958.39
  5. Step 5: Solve for x
    x = 72,086,862,958.39/245,816.64
  6. Step 6: Final answer
    x = 293,254.61

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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.