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Finding the Fourth Proportional to 217,953.68, 326,969.40 and 84,906.32

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Solution

The fourth proportional to 217,953.68, 326,969.40 and 84,906.32 is: 127,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,953.68 : 326,969.40 = 84,906.32 : x
  2. Step 2: Convert to fraction form
    217,953.68/326,969.40 = 84,906.32/x
  3. Step 3: Cross multiply
    217,953.68x = 326,969.40 × 84,906.32
  4. Step 4: Simplify right side
    217,953.68x = 27,761,768,506.61
  5. Step 5: Solve for x
    x = 27,761,768,506.61/217,953.68
  6. Step 6: Final answer
    x = 127,374.63

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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.